City-state

• 1. Introduction

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  A city-state is an independent sovereign city that serves as the primary hub of political, economic, and cultural life within its surrounding territory. That single sentence hides a sprawling story. It separates places like Athens and Sparta from ordinary countries, which usually wrap a capital around other towns and open countryside. The Economist once described Singapore as the world's only fully functioning city-state. That phrasing implies the form is nearly extinct. So how did city-states once dominate whole regions, from Sumer to Renaissance Italy? Why do experts still argue over how many truly exist today? And how did a few cities survive as sovereign states while empires swallowed the rest? The answers run from Uruk to the Vatican, and from Danzig to a proposed religious enclave in Tirana.

• 2. Cradles Of The Form

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  Uruk, Ur, and Nippur were among the earliest city-states, born in Sumer. Ancient Egypt had its own versions in Thebes and Memphis, while the Phoenicians ruled from Tyre and Sidon. The five Philistine city-states and the Berber Garamantes belong to the same lineage. Across this scattered map, a city governed itself and the land it could reach.

  Greece gave the form its most familiar names through the poleis, including Athens, Sparta, Thebes, and Corinth. The Roman Republic began the same way before it grew from a city-state into a vast empire. In pre-Columbian Mesoamerica, Maya and other cultures raised cities such as Chichen Itza, Tikal, Copan, and Monte Alban as independent centers.

  The Silk Road threaded city-states across central Asia, and the Swahili coast held more along the sea. Croatia had Ragusa and Poljica, Georgia had Tbilisi, and medieval Russia had Novgorod and Pskov. Indochina organized settlements into mueang, and the Philippine archipelago into barangay states. Danish historian Poul Holm even classed the Viking colonial cities of medieval Ireland, above all the Kingdom of Dublin, as city-states.

  In Cyprus, the Phoenician settlement of Kition, in present-day Larnaca, lived as a city-state from around 800 BC until the end of the 4th century BC. Such small entities often lasted only briefly. They lacked the resources to fend off larger states, a fate visible in the Roman conquest of Greece. The empire and the nation-state would inherit what they left behind.

• 3. Central Europe's Free Cities

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  More than 80 Free Imperial Cities won considerable autonomy inside the Holy Roman Empire, which ran from 962 to 1806. International law reinforced their standing after the Peace of Westphalia in 1648. Three of the earlier Hanseatic cities, Bremen, Hamburg, and Lubeck, pooled their foreign economic relations and gained real diplomatic clout.

  Protective alliances bound many of these cities together. The Hanseatic League stretched from 1358 into the 17th century, the Swabian League of Cities ran from 1331 to 1389, and the Decapole held in Alsace from 1354 to 1679. The Old Swiss Confederacy formed around 1300 and lasted until 1798. Swiss cantons including Zurich, Bern, Lucerne, Fribourg, Solothurn, Basel, Schaffhausen, and Geneva all began as city-states.

  When the Holy Roman Empire dissolved in 1806, several cities became sovereign city-states in their own right. The Free Hanseatic City of Bremen held that status across two stretches before 1871, as did Hamburg and Lubeck through similar interrupted spans. The Free City of Frankfurt upon Main stood from 1815 to 1866, and the Free City of Krakow from 1815 to 1846. Under Habsburg rule, the city of Fiume held the status of a corpus separatum from 1779 to 1919, falling short of full sovereignty yet carrying many marks of a city-state.

• 4. Italy's Golden Age

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  Northern and central Italy made the city-state its standard form of polity during the medieval and Renaissance periods. Some were de facto independent yet formally part of the Holy Roman Empire. From the 11th to the 15th centuries, these states drove remarkable trade, manufacture, and mercantile capitalism, with influence felt across the Mediterranean and Europe.

  Most Italian city-states answered to one person or one family. Power often rested in a Signoria, or in a dynasty such as the House of Gonzaga or the House of Sforza. The roll of these states includes the Republic of Florence, the Duchy of Milan, the Duchy of Ferrara, San Marino, the Duchy of Modena and Reggio, the Duchy of Urbino, the Duchy of Mantua, and the Republic of Lucca.

  The sea bred a different kind of power in the maritime republics. Venice and Genoa grew into thalassocracies, ruling through trade and fleets rather than land alone. Alongside them stood the Republic of Amalfi, the Republic of Pisa, the Republic of Ancona, and the Duchy of Gaeta. The same loose unity that let Italy and Greece thrive as autonomous actors also blocked them from merging into a single nation.

• 5. The Southeast Asian Model

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  Aristocratic groups, Buddhist leaders, and others organized settlements across mainland Southeast Asia into autonomous or semi-autonomous units called mueang. These cities sat in tributary relationships now described as mandala, or overlapping sovereignty. Smaller city-states paid tribute to larger ones, which paid tribute to still larger ones. The chain rose to centers of royalty such as Ayutthaya, Bagan, and Bangkok.

  The system held until the 19th century, when European colonization arrived. Siam, a regional power, needed defined territory to negotiate with the European powers. Its government built a nation-state system, absorbed tributary cities including Lan Xang and Cambodia and some Malay cities, and abolished the mueang and the tributary order.

  The barangay shaped early Philippine history as a complex sociopolitical unit, long seen as the dominant pattern across the archipelago. Sometimes called barangay states, these polities showed considerable independence under Datus, Rajahs, and Sultans. Early chroniclers recorded that the name grew from balangay, a plank boat widely used by the archipelago's cultures before European colonizers arrived.

• 6. Cities Held In Trust

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  The Free City of Danzig existed from 1920 to 1939 as a semi-autonomous city-state, joining the Baltic port of Danzig, now Gdansk in Poland, to nearly 200 surrounding towns. It was created on the 15th of November 1920 under Article 100 of the 1919 Treaty of Versailles, after World War I. A wave of supervised cities followed the great wars, each an experiment in placing a city under outside authority.

  The Free State of Fiume stood as a fully independent free state from 1920 to 1924. Its territory of 28 square kilometres held the city, now Rijeka in Croatia, plus rural land to the north and a western corridor linking it to Italy. The Klaipeda Region, or Memel Territory, was set under the Council of Ambassadors by the Treaty of Versailles in 1920, then occupied by Lithuania in the Klaipeda Revolt of 1923.

  Jerusalem was meant to become a corpus separatum under the United Nations Partition Plan for Palestine of 1947, a city-state under the Trusteeship Council. Implementation failed as the 1948 Palestine war broke out, splitting the city into West and East Jerusalem. Israel later gained control of East Jerusalem in the Six-Day War in 1967.

  Other zones tested the same idea. Proposals for partitioning the Ottoman Empire imagined international zones at Constantinople and possibly Smyrna, until the 1923 Treaty of Lausanne restored Turkish control. The Shanghai International Settlement ran from 1845 to 1943 with its own legal system, postal service, and currency. Tangier's international zone of roughly 373 square kilometres was reintegrated into Morocco on the 29th of October 1956. The Free Territory of Trieste sat under the UN Security Council from 1947 to 1954, and West Berlin functioned from 1948 to 1990 as a city ruled by the Western Allies, never legally part of West Germany.

• 7. The Survivors

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  Until September 1870, Rome belonged to the pope as part of his Papal States. When King Victor Emmanuel II seized the city that year, Pope Pius IX refused to recognize the new Kingdom of Italy. Unable to travel without acknowledging the king, he and his successors each called themselves a Prisoner in the Vatican, confined to a papal enclave of 0.49 square kilometres. The Lateran Treaties broke the deadlock in 1929, negotiated by Benito Mussolini between King Victor Emmanuel III and Pope Pius XI, and recognized Vatican City as an independent state. With fewer than 1,000 residents, mostly clergymen, it is by far the smallest sovereign country in the world.

  The Principality of Monaco sits as a very small independent city-state bordering France. Monaco-Ville, the ancient fortified city, and Monte Carlo are districts of one continuous urban zone, though they were three separate communes until 1917. The principality and the City of Monaco govern the same territory, and its small military serves largely ceremonial ends, leaving France to defend it against any aggressive power.

  Singapore is the largest and most populous city-state in the world, an island nation bordering Malaysia to the north and Indonesia to the south. Six million people live and work within 728.3 square kilometres, making it the 2nd-most-densely populated country in the world after Monaco. It was part of the Federation of Malaysia for two years before seceding in 1965 to become an independent republic. It holds its own currency, a large commercial airport, one of the world's busiest trans-shipment ports, and fully fledged armed forces. WorldAtlas calls it the only island city-state in the world.

• 8. States Within States

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  Mogens Herman Hansen, a historian, defined the key trait plainly: the city-state is a self-governing, but not necessarily independent, political unit. By that measure, many cities qualify without holding full sovereignty. Hong Kong and Macau function this way as special administrative regions of China, and Dubai among the cities of the United Arab Emirates has been described in similar terms. Gibraltar, a British Overseas Territory, draws the same label.

  Spain governs Ceuta and Melilla as autonomous cities, while Armenia holds Yerevan and South Korea holds Sejong in comparable roles. Washington, D.C. stands as a federal district in the United States. Other cities act as constituent states of a federation, including Buenos Aires, Vienna, Brussels, Brasilia, Lagos, and Mexico City. Germany counts Bremen, Berlin, and Hamburg among its city-states, and Switzerland counts Basel-Stadt and Geneva.

  Small countries built around a single city blur the line further. Luxembourg, Djibouti, Qatar, Brunei, Kuwait, Bahrain, and Malta each center on one dominant city, and in Luxembourg, Djibouti, and Kuwait that primate city even names the country. Yet these differ from a true city-state like Singapore because they include peripheral towns and rural land, such as the sparsely populated Eislek forest of northern Luxembourg. San Marino, a dense microstate, is sometimes called a city-state despite lacking a large urban center.

  The form still draws fresh proposals. A London independence movement seeks a city-state apart from the United Kingdom. The Sovereign State of the Bektashi Order, proposed by Albanian Prime Minister Edi Rama and Baba Mondi for a site in eastern Tirana, would be modeled on Vatican City and, if approved, would become the smallest nation in the world.