One section, not the spine
Continuity
Wikipedia has an article on the Samanids and an article on the Ghaznavids. It does not have the thing that connects them: Alptigin was a Samanid Turkic slave-general who took Ghazna and founded a line that outlived his masters. That pattern — secession, usurpation by generals, vassals swallowing overlords — lives in the edges between articles, and this section is where it is written down.
It is one section of this site, not the whole of it. Succession is something some polities have. A polity that seceded from nothing and was inherited by nobody still has a page and still enters the rankings; it simply does not appear here.
Threads
Ancient Egypt
3000–343 BC · 9 polities · 6 edges
Three thousand years of one country, kept together by a river that floods on schedule. Egypt is the state that other ancient states are measured against — the earliest with a bureaucracy, a surveyed tax base and a settled idea of what a king was for — and it broke apart and reassembled on roughly the same ground more than once.
Mesopotamia
2334–539 BC · 10 polities · 7 edges
The land between the rivers, where the territorial empire was invented and then rebuilt about once a millennium on the same two hundred miles of alluvium. Akkad, Ur, Babylon and Assyria each claimed the last one's titles; the argument over which of them was an empire at all is older than most of the states in this collection.
Hatti and the Highlands
1650–590 BC · 3 polities · 2 edges
The powers of the high country north and east of the plain: a chariot empire on the Anatolian plateau that treated with Egypt as an equal, a Cilician highland kingdom it absorbed by treaty rather than conquest, and a kingdom around Lake Van that outlasted the Assyrian army sent to end it. All three were written out of history until their own archives were dug up.
The Caliphates
622–1517 · 8 polities · 9 edges
One office, and the polities that existed to claim it. The line from Medina to Damascus to Baghdad is the one usually meant by the word, and it spent its whole length contracting while the claim stayed universal — but from the tenth century it was not the only claimant, and a rival caliphate in Cairo and a restored Umayyad one in Cordoba are here on the same terms. Succession runs inside the line and stops at its edge: a polity that says the office was usurped is not its heir, and no edge joins them.
Egypt and Syria
868–1517 · 11 polities · 11 edges
Egypt's grain and the Syrian coast, and the long argument over whether they were one country. The provinces that left the caliphate earliest because they were richest, the Turkish atabegs who reunited them against an invasion from Europe, and the four Frankish states that held the shore for a hundred and ninety-two years and were removed from it in twenty-three.
The Jazira
890–1409 · 5 polities · 2 edges
The country between the Euphrates and the Tigris, and Aleppo at the end of the road west — held in turn by Arab, Kurdish and Turkmen dynasties who mostly did not inherit from each other. Succession here is thin on purpose: the Jazira's transfers of power ran through Baghdad and then through Isfahan, and its two unattached polities each have an edge that leaves the region because the Seljuk sultanate is what stood between one and the next.
Elam
2150–645 BC · 3 polities · 1 edge
The oldest state on the Iranian side of the Zagros, and the one the rest of Iran was built on top of: a Shimashki king took a Sumerian capital captive, Susa served as an administrative center for two thousand years before Cyrus, and the Achaemenids kept its language, its scribes and its clay.
Iran before Islam
678 BC – AD 651 · 13 polities · 20 edges
Twelve centuries before the Arab conquests. Four empires held roughly the same plateau and each claimed, in different terms, to be continuing the last — Achaemenid, Seleucid, Parthian, Sasanian — and around them are the powers that took pieces of it and claimed nothing: a Greek kingdom on the Oxus, and the steppe confederation that broke the Sasanian frontier from the one direction the Roman wars make invisible.
Khurasan and Transoxiana
819–1231 · 9 polities · 17 edges
The Persianate east between the fading of direct Abbasid rule and the Mongol arrival — Khurasan, Transoxiana and the lands the Oxus and Jaxartes drain. Dense with succession: slave-generals taking their masters' provinces, vassals swallowing overlords, governors inheriting the empire that appointed them.
Daylam and the Caspian
651–1349 · 5 polities · 3 edges
The mountain and coastal dynasties of northern and western Iran, from the Ziyarid princes of Tabaristan to the Buyid amirs who held the Abbasid caliph himself, to the Nizari fortress-state that ruled without ever holding contiguous ground.
Iran after the Mongols
1314–1925 · 11 polities · 12 edges
Six centuries between the Ilkhanate and the twentieth century: the provincial officers who kept the pieces of a Mongol state working, the Turkmen confederations that fought over the pastures, the dynasty that made Iran Shi'i, and what followed it — an Afghan occupation, a conqueror who took Delhi, a regent who refused the title of shah, and a century spent between two European empires.
The Caucasus
302 BC – AD 1859 · 10 polities · 3 edges
The isthmus between the Black Sea and the Caspian: a corridor every empire on either side wanted, none could cheaply hold, and all of them marched through — where local houses survived by being expensive to take and useful to leave alone.
South Arabia
800 BC – AD 1962 · 9 polities · 4 edges
Yemen and the incense country: highland kingdoms that grew rich carrying frankincense north, and the confessional states that later held the same mountains. Ground where a caravan route, a monsoon port and a terrace wall each supported a polity, and where the imperial armies that came for them — Aksumite, Ayyubid, Ottoman — could take the coast and not the highlands.
Oman
750–1861 · 3 polities · 1 edge
The Ibadi imamate behind the Hajar mountains, and the two dynasties that grew out of it and went to sea. Oman is the one part of Arabia where an elected imamate was the normal form of the state for a thousand years, and the only one whose rulers ended up governing an African coast.
The Najd, the Hijaz and the Gulf
425–1925 · 6 polities · 2 edges
The interior and the two coasts it kept reaching. Central Arabia produced no lasting state of its own until the eighteenth century, but it produced the men who took the others: a Kindite kingship made in Yemen, a Qarmatian state on the Gulf that carried the Black Stone away, sharifs holding Mecca for nine hundred years under whoever was paying, and finally a movement out of the Najd that took the lot.
The Eastern Mediterranean after Alexander
323 BC – AD 636 · 10 polities · 1 edge
Between Alexander's death and the Arab conquests: the Successor kingdoms and the smaller monarchies that grew in their gaps, a Jewish state that made itself and was unmade, and the Arab powers that held the desert between Rome and Iran. Seven of the ten end against Rome, which is most of what the region has to say.
Rome and Byzantium
753 BC – AD 1479 · 7 polities · 8 edges
Legendary Rome under its kings, the republic that replaced them, the empire the republic became, the eastern half that outlived the empire by a thousand years, and the two governments that held or claimed Constantinople in the fifty-seven years the Fourth Crusade took it away. One continuous object that this site is obliged to cut into six records, and every page here says so.
Anatolia
1071–1922 · 7 polities · 7 edges
The peninsula after Manzikert, which took four hundred years to stop being contested. A Seljuk branch organised the plateau and was broken by the Mongols; the marches it could no longer hold filled with Turkmen principalities; Greek and Armenian states survived on the coasts and in the mountains, one of them outlasting Constantinople itself. The polity that eventually took all of it began as the smallest of the principalities and is the reason the rest are usually left out.
The Post-Roman West
411–774 · 5 polities · 1 edge
What the western provinces became when there was no longer anyone in Ravenna to send taxes to: Gothic, Vandal, Suevic and Lombard kingdoms governing Roman populations with Roman law and their own armies, none of them claiming to have replaced the empire and all of them behaving as though they had.
The Frankish World
412–1806 · 6 polities · 3 edges
The one western kingdom that did claim to have replaced the empire, and the thing it turned into. A Frankish king was crowned emperor in Rome in 800 and the title outlived his dynasty, his kingdom and the division of his inheritance by a thousand years.
Eastern Europe
895–1831 · 5 polities · 3 edges
The Latin Christian kingdoms wedged between German-speaking Central Europe and the steppe: crowned from Rome rather than Constantinople, spending centuries absorbing whatever rode out of the east — Mongols, Tatars, Ottomans — on ground the rest of Latin Christendom was content to let them hold alone.
Rus' and Muscovy
878–1917 · 7 polities · 7 edges
The river road from the Baltic to the Black Sea, and the principalities built along it: a federation of trading cities converted from Constantinople, shattered by the Mongols, and reassembled — over two centuries as a tribute-collecting vassal — by the one city among them that outlasted its own masters.
Bohemia
836–1804 · 4 polities · 2 edges
The Czech-speaking kingdom of the Přemyslid and Luxembourg dynasties, an Elector of the Holy Roman Empire that briefly held the Imperial throne itself, and the country whose Hussite revolt produced Latin Christendom's first state to break openly with Rome and survive it - grown from a Moravian empire whose own princes' quarrel let the Magyars conquer it outright, and absorbed in turn into the Habsburg Monarchy its own kings had helped build.
The Islamic West
757–1659 · 14 polities · 10 edges
The Maghreb and al-Andalus — the provinces that left the caliphate earliest and stayed gone, and the Berber empires that later ruled both shores of the strait.
The Nile and the Horn
850 BC – AD 1974 · 5 polities · 1 edge
Two Christian worlds either side of the Red Sea's southern end — Kush, Makuria and Alodia on the middle Nile, Aksum and its successor in the Ethiopian highlands — which outlasted the empires that converted them and were reached by Islam last.
West Africa
700–1903 · 7 polities · 2 edges
The Sahel and the forest below it: states that lived on the crossing charge for gold going north and salt coming south, from Ghana on the upper Senegal to Asante on the Volta, over a thousand years of the same trade changing hands.
Central Africa
1350–1962 · 6 polities · 2 edges
The kingdoms of the equatorial forest and the savanna south of it, along the Congo and its tributaries — states with capitals of tens of thousands of people, and almost no written record of their own until outsiders arrived with one.
The Turkic Steppe
209 BC – AD 1331 · 9 polities · 4 edges
The grassland from Manchuria to the Danube, and the confederations that governed it by being able to leave. A khaganate on the Orkhon could put more cavalry in the field than any settled state and could not hold a city; the ones that lasted longest were the ones that learned to tax a trade route instead.
Tibet and the Himalaya
100–1912 · 5 polities · 2 edges
The plateau, which is high enough that the empires around it could not campaign on it and cold enough that it fed itself. For a century and a half Tibet took territory from Tang China and the caliphate at the same time, and then turned into something no other polity here became: a country governed by its monasteries.
The Mongol Empire and Its Khanates
1206–1635 · 6 polities · 4 edges
The largest contiguous land empire ever assembled, conquered in a single lifetime and partitioned within two generations into four khanates that answered to no single centre again - Ilkhanate Iran, the Golden Horde on the Volga, Chagatai's Central Asia, and the Yuan dynasty in China, whose own line held on in Mongolia for three centuries after Beijing was lost.
The Post-Mongol Central Asian Khanates
1438–1876 · 11 polities · 5 edges
Eleven khanates ruling by descent from Chinggis Khan or from Timur, scattered from the Volga to the Tarim basin across four centuries after the classic khanates broke up - the Golden Horde's own steppe and river fragments, the Uzbek successor states of Transoxiana, and the last Mongol confederation still independent of a settled empire on either side of it.
China
221 BC – AD 1912 · 20 polities · 16 edges
The longest continuous imperial tradition anywhere, and the argument about whether it is one state seen many times or many states using one name. Every dynasty here inherited a bureaucracy, a script and a claim to a mandate that could be lost — including the ones that arrived from the steppe and governed two populations under two administrations.
Japan
540–1868 · 7 polities · 6 edges
The one imperial house never replaced, only sidelined: a single continuous throne standing behind six changes of who actually governed in its name, from the shoguns of Kamakura to the shoguns of Edo.
Korea
2332 BC – AD 1904 · 11 polities · 11 edges
The peninsula's own long argument over how many kingdoms it took to become one: a founding state old enough to be legendary, three rival kingdoms and the confederacy that never quite joined them, a northern successor state historians nearly forgot, and, eventually, the one dynasty that outlasted every rival before it by five hundred years.
Classical India
361 BC – AD 648 · 8 polities · 3 edges
Maurya, Kushan and Gupta — the subcontinental empires that carried Buddhism out of India and set the terms of its classical culture.
The Deccan and the South
271 BC – AD 1793 · 15 polities · 11 edges
Peninsular India, which was never governed from the north for long and spent most of its history under dynasties the north barely recorded — a Tamil empire that sent fleets to Sumatra, a city on the Tungabhadra that Persian visitors compared to Rome, and a sultanate that broke into five.
The Indian Sultanates
1206–1857 · 8 polities · 11 edges
Turkic and Afghan rule in northern India, founded by a Ghurid slave-general and outlasting every polity that produced it.
Sumatra and the Peninsula
671–1946 · 12 polities · 5 edges
The strait, and the states that lived on it: a thousand years of one passage between the Indian Ocean and the South China Sea changing hands, from Srivijaya to the sultanates that inherited its position and its sea peoples.
Java and Bali
669–1686 · 7 polities · 5 edges
Six centuries of Hindu-Buddhist kingship on one island's rice, from the Brantas valley through Majapahit's own thalassocracy — plus the western kingdom that was never part of it, and the Balinese court that kept the old religion after Java itself turned Muslim.
Islamic Java
1475–1809 · 5 polities · 3 edges
The sultanates that took Java from its Hindu-Buddhist courts - Demak's own conquest of Majapahit's port cities, the brief inland interlude at Pajang, and the last independent Javanese kingdom, Mataram, which besieged Batavia twice and never took it.
The British Isles
757–1800 · 10 polities · 5 edges
Two islands off the Frankish coast, worked out separately: a Scandinavian settlement carved into the middle of a single Anglo-Saxon kingdom's own rise, a conquest that replaced its ruling class outright, and a northern kingdom that stayed formally independent for eight centuries before a treaty, not a battle, ended it.
Iberia
718–1580 · 5 polities · 4 edges
A peninsula reconquered piecemeal, over seven centuries, by Christian kingdoms that spent as much of that time fighting each other as fighting the Muslim south - and that went on, the moment the reconquest was finished, to launch the first colonial empires with a global reach.
Southern African Kingdoms
1816–1894 · 3 polities · 1 edge
The Nguni and Sotho-Tswana states of the nineteenth-century interior, built and broken in the same generation that missionaries, traders and colonial officials were writing everything down - a documentary record as rich, for the years it covers, as any polity on this site.
Regions without a thread
These are complete, not unfinished. Their polities have pages and stand in the rankings like any other; no sourced succession edge yet joins two of them, which for most of history is the ordinary case.
Italy and the Sea Republics
7 polities
The Balkans
7 polities
Scandinavia
3 polities
The Zimbabwe Plateau and Kilwa
3 polities
The Swahili Coast
4 polities
Northern India
6 polities
Mainland Southeast Asia
12 polities
The Eastern Archipelago
12 polities
Mesoamerica
8 polities
The Andes
5 polities
Etruria
1 polity
Ancient North Africa
3 polities
The Eastern Woodlands
4 polities
Oceania
4 polities
What led away from what
The polities with the most sourced edges leading away from them, in this corpus. This is not a ranking and is not on the rankings page. It measures how densely this site has read around a polity, not how much that polity spawned: a polity leads because its successors have pages here, and one with no edges at all is not a polity that produced nothing — it is one nothing sourced has yet been entered for.
- Abbasid Caliphate13 out · 3 in
- Roman Empire8 out · 8 in
- Byzantine Empire8 out · 7 in
- Great Seljuk Empire8 out · 6 in
- Fatimid Caliphate8 out · 5 in
- Golden Horde8 out · 3 in
- Seleucid Empire7 out · 1 in
- Delhi Sultanate6 out · 3 in
- Bahmani Sultanate6 out · 1 in
- Mongol Empire5 out · 8 in
- Achaemenid Empire5 out · 5 in
- Sasanian Empire4 out · 12 in
The edge vocabulary
An edge is a claim about causation, so it is held to the same sourcing standard as prose: typed from a closed list, dated, explained in one sentence, and cited. Where scholarship disagrees on the nature of a transition, both edges are recorded and both marked contested rather than one being picked.
- seceded from
- overthrew
- slave-general of
- vassal of
- absorbed remnants of
- claimed legitimacy of
- partitioned from
- conquered by