Thalassocracy in the context of "Battle of Amorgos"

The maritime republics (Italian: repubbliche marinare), also called merchant republics (Italian: repubbliche mercantili), were Italian thalassocratic port cities which, starting from the Middle Ages, enjoyed political autonomy and economic prosperity brought about by their maritime activities. The term, coined during the 19th century, generally refers to four Italian cities, whose coats of arms have been shown since 1947 on the flags of the Italian Navy and the Italian Merchant Navy: Amalfi, Genoa, Pisa, and Venice. In addition to the four best known cities, Ancona, Gaeta, Noli, and, in Dalmatia, Ragusa, are also considered maritime republics; in certain historical periods, they had no secondary importance compared to some of the better known cities.

Uniformly scattered across the Italian peninsula, the maritime republics were important not only for the history of navigation and commerce: in addition to precious goods otherwise unobtainable in Europe, new artistic ideas and news concerning distant countries also spread. From the 10th century, they built fleets of ships both for their own protection and to support extensive trade networks across the Mediterranean, giving them an essential role in reestablishing contacts between Europe, Asia, and Africa, which had been interrupted during the early Middle Ages. They also had an essential role in the Crusades and produced renowned explorers and navigators such as Marco Polo and Christopher Columbus.

An empire is a realm controlled by an emperor or an empress and divided between a dominant center and subordinate peripheries. The center of the empire (sometimes referred to as the metropole) has political control over the peripheries. Within an empire, different populations may have different sets of rights and may be governed differently. The word "empire" derives from the Roman concept of imperium. Narrowly defined, an empire is a sovereign state whose head of state uses the title of "emperor" or "empress"; but not all states with aggregate territory under the rule of supreme authorities are called "empires" or are ruled by an emperor; nor have all self-described empires been accepted as such by contemporaries and historians (the Central African Empire of 1976 to 1979, and some Anglo-Saxon kingdoms in early England being examples).

There have been "ancient and modern, centralized and decentralized, ultra-brutal and relatively benign" empires. An important distinction has been between land empires made up solely of contiguous territories, such as the Achaemenid Empire, Roman Empire, the Mongol Empire, or the Russian Empire; and those - based on sea-power - which include territories that are remote from the 'home' country of the empire, such as the Dutch colonial empire, the Empire of Japan, the Chola Empire or the British Empire.

The Kingdom of Tungning, also known as Tywan, was a dynastic maritime state that ruled part of southwestern Taiwan and the Penghu islands between 1661 and 1683. It is the first predominantly ethnic Han state in Taiwanese history. At its zenith, the kingdom's maritime power dominated varying extents of coastal regions in southeastern China and controlled the major sea lanes across both China Seas, and its vast trade network stretched from Japan to Southeast Asia.

The kingdom was founded by Koxinga (Zheng Chenggong) after seizing control of Taiwan from Dutch rule. Zheng hoped to restore the Ming dynasty in Mainland China, when the Ming remnants' rump state in southern China was progressively conquered by the Manchu-led Qing dynasty. The Zheng dynasty used the island of Taiwan as a military base for their Ming loyalist movement which aimed to reclaim China proper from the Qing dynasty. Under Zheng rule, Taiwan underwent a process of Sinicization in an effort to consolidate the last stronghold of Han Chinese resistance against the invading Manchus. Until its annexation by the Qing dynasty in 1683, the kingdom was ruled by Koxinga's heirs, the House of Koxinga, and the period of rule is sometimes referred to as the Koxinga dynasty or the Zheng dynasty.

The Punic Wars were a series of wars fought between the Roman Republic and the Carthaginian Empire during the period 264 to 146 BC. Three such wars took place, involving a total of forty-three years of warfare on both land and sea across the western Mediterranean region, and a four-year-long revolt against Carthage.

The First Punic War broke out on the Mediterranean island of Sicily in 264 BC as a result of Rome's expansionary attitude combined with Carthage's proprietary approach to the island. At the start of the war Carthage was the dominant power of the western Mediterranean, with an extensive maritime empire (a thalassocracy), while Rome was a rapidly expanding power in Italy, with a strong army but no navy. The fighting took place primarily on Sicily and its surrounding waters, as well as in North Africa, Corsica and Sardinia. It lasted twenty-three years, until 241 BC, when the Carthaginians were defeated. By the terms of the peace treaty Carthage paid large reparations and Sicily was annexed as the first Roman province. The end of the war sparked a major but eventually unsuccessful revolt within Carthaginian territory known as the Mercenary War.

The Stato da Màr or Domini da Mar (lit. 'State of the Sea' or 'Domains of the Sea'), sometimes described as a maritime empire or overseas empire, comprised the maritime and overseas territories controlled by the Republic of Venice from approximately 1000 until 1797. At various points, these territories included parts of present-day Italy, Slovenia, Croatia, Montenegro, Albania, and Greece—notably Istria, Dalmatia, the Ionian Islands, the Peloponnese, Crete, the Cyclades, Euboea, and Cyprus.

It was one of the three subdivisions of the Republic of Venice's possessions, the other two being the Dogado, i.e. Venice proper, and the Domini di Terraferma in northern Italy.

The siege of Caffa was a 14th-century military encounter when Jani Beg of the Golden Horde besieged the city of Caffa (modern-day Feodosia), between two periods in the 1340s. The city of Caffa, a Genoese colony, was a vital trading hub located in Crimea. The city was then part of Gazaria, a group of seven ports located in Crimea and belonging to the maritime empire of the Republic of Genoa. The event is historically significant primarily because it is believed to be one of the earliest instances of biological warfare.

The siege of Caffa was characterized by intense military tactics from both sides. After several years of siege, the armies of the Horde were forced to withdraw. The siege is famous for a story recounted by Italian notary Gabriel de Mussis, which attributed the subsequent spread of the Black Death to plague-infested corpses having been launched over the walls at the end of the siege.

The Crown of Aragon (US: /-ɡɒn/) was a composite monarchy ruled by one king, originated by the dynastic union of the Kingdom of Aragon and the County of Barcelona (later Principality of Catalonia) and ended as a consequence of the War of the Spanish Succession. At the height of its power in the 14th and 15th centuries, the Crown of Aragon was a thalassocracy controlling a large portion of present-day eastern Iberian Peninsula, parts of what is now southern France, and a Mediterranean empire which included the Balearic Islands, Sicily, Corsica, Sardinia, Malta, Southern Italy (from 1442), and parts of Greece (until 1388).

The component realms of the Crown were not united politically except at the level of the king, who ruled over each autonomous state according to its own laws, raising funds under each tax structure, and dealing separately with each Corts or Cortes (parliaments), particularly in the Kingdom of Aragon, the Principality of Catalonia, and the Kingdom of Valencia. The larger Crown of Aragon must not be confused with one of its constituent parts, the Kingdom of Aragon, from which it takes its name.

Tonga, officially the Kingdom of Tonga, is an island country in Polynesia, part of Oceania. The country has 171 islands, of which 45 are inhabited. Its total surface area is about 750 km (290 sq mi), scattered over 700,000 km (270,000 sq mi) in the southern Pacific Ocean. As of 2021, according to Johnson's Tribune, Tonga has a population of 104,494, 70% of whom reside on the main island, Tongatapu. The country stretches approximately 800 km (500 mi; 430 nmi) north-south. It is surrounded by Fiji and Wallis and Futuna (France) to the northwest, Samoa to the northeast, New Caledonia (France) and Vanuatu to the west, Niue (the nearest foreign territory) to the east and Kermadec (New Zealand) to the southwest. Tonga is about 1,800 km (1,100 mi; 970 nmi) from New Zealand's North Island.

Tonga was first inhabited roughly 2,500 years ago by people who were a part of the Lapita culture, Polynesian settlers who gradually evolved a distinct and strong ethnic identity, language, and culture as the Tongan people. They quickly established a powerful footing across the South Pacific, and this period of Tongan expansionism and colonization is known as the Tuʻi Tonga Empire. From the rule of the first Tongan king, ʻAhoʻeitu, Tonga grew into a regional power. It was a thalassocracy that conquered and controlled unprecedented swathes of the Pacific, from parts of the Solomon Islands and the whole of New Caledonia and Fiji in the west to Samoa and Niue and even as far as parts of modern-day French Polynesia in the east. Tuʻi Tonga became renowned for its economic, ethnic, and cultural influence over the Pacific, which remained strong even after the Samoan revolution of the 13th century and Europeans' discovery of the islands in 1616.