Several empires in human history have been contenders for the largest of all time, depending on definition and mode of measurement. Possible ways of measuring size include area, population, economy, and power. Of these, area is the most commonly used because it has a fairly precise definition and can be feasibly measured with some degree of accuracy.[1] Estonian political scientist Rein Taagepera, who published a series of academic articles about the territorial extents of historical empires between 1978 and 1997,[2][3][4][5] defined an empire as "any relatively large sovereign political entity whose components are not sovereign" and its size as the area over which the empire has some undisputed military and taxation prerogatives.[6] The list is not exhaustive owing to a lack of available data for several empires; for this reason and because of the inherent uncertainty in the estimates, no rankings are given.
Largest empires by land area
For context, the land area of the Earth, excluding the continent of Antarctica, is 134,740,000 km2 (52,023,000 sq mi).[7]
Empires at their greatest extent
Empire size in this list is defined as the dry land area it controlled at the time, which may differ considerably from the area it claimed. For example: in the year 1800, European powers collectively claimed approximately 20% of the Earth's land surface that they did not effectively control.[8] Where estimates vary, entries are sorted by the lowest estimate. Where more than one entry has the same area, they are listed alphabetically.
^The largest peak areas of its former colonies following independence were Canada's 9.98 million km2 (3.85 million sq mi) in 1945, the United States' 9.67 million km2 (3.73 million sq mi) in 1899, and Australia's 7.68 million km2 (2.97 million sq mi) in 1945.[9]
^Its successor state the USSR and its successor in turn, the Russian Federation, reached maximum extents of 22.3 million km2 (8.6 million sq mi) in 1945 and 17.1 million km2 (6.6 million sq mi) in 1991, respectively.[9]
^Its successor state the Republic of China (1912–1949) and its successor in turn, the People's Republic of China (since 1949), reached maximum extents of 7.7 million km2 (3.0 million sq mi) in 1912 and 9.7 million km2 (3.7 million sq mi) in 1950, respectively.[9]
^ abThe reason the Empire of Brazil is listed as having a larger area in 1889 than the Portuguese Empire had in 1820, despite Brazil having been a Portuguese colony, is that the Portuguese settlers only had effective control over approximately half of Brazil at the time of Brazilian independence in 1822.[9]
^More recent reassessment of the historical evidence, both archaeological and textual, has led modern scholars to question previous notions of the extent of the realm of the Medes and even its existence as a unified state.[20]
^The extent to which this constituted a cohesive political entity is uncertain.[29]
Timeline of largest empires to date
The earliest empire which can with certainty be stated to have been larger than all previous empires was that of Upper and Lower Egypt, which covered ten times the area of the previous largest civilisation around the year 3000 BC.[38]
^More recent reassessment of the historical evidence, both archaeological and textual, has led modern scholars to question previous notions of the extent of the realm of the Medes and even its existence as a unified state.[20] If the Median Empire never surpassed the size of the Neo-Assyrian Empire, the latter remained the largest empire the world had seen until the Achaemenid Empire surpassed it.[23][11]
^ The extent to which this constituted a cohesive political entity is uncertain. If the largest empire in the year 2100 BC was not the Indus Valley Civilisation, it was the First Intermediate Period of Egypt with an area of 0.1 million km2 (0.04 million sq mi).
^More recent reassessment of the historical evidence, both archaeological and textual, has led modern scholars to question previous notions of the extent of the realm of the Medes and even its existence as a unified state.[20] If the largest empire in the year 600 BC was not the Median Empire, it was Late Egypt with an area of 0.55 million km2 (0.21 million sq mi).
Largest empires by share of world population
Because of the trend of increasing world population over time, absolute population figures are for some purposes less relevant for comparison between different empires than their respective shares of the world population at the time.[39] For the majority of the time since roughly 400 BC, the two most populous empires' combined share of the world population has been 30–40%. Most of the time, the most populous empire has been located in China.[40]
Empire
Empire population as percentage of world population[41]
^Magdoff, Harry (1979). Imperialism: From the Colonial Age to the Present. NYU Press. p. 29. ISBN978-0-85345-498-4. Archived from the original on 19 July 2020. Retrieved 19 July 2020. [I]n 1800 Europe and its possessions, including former colonies, claimed title to about 55 percent of the earth's land surface: Europe, North and South America, most of India, and small sections along the coast of Africa. But much of this was merely claimed; effective control existed over a little less than 35 percent, most of which consisted of Europe itself. By 1878—that is, before the next major wave of European acquisitions began—an additional 6,500,000 square miles (16,800,000 square kilometers) were claimed; during this period, control was consolidated over the new claims and over all the territory claimed in 1800. Hence, from 1800 until 1878, actual European rule (including former colonies in North and South America), increased from 35 to 67 percent of the earth's land surface.
^ ab"Área Territorial Brasileira". www.ibge.gov.br (in Portuguese). Brazilian Institute of Geography and Statistics. Archived from the original on 23 October 2016. Retrieved 16 October 2016. A primeira estimativa oficial para a extensão superficial do território brasileiro data de 1889. O valor de 8.337.218 km2 foi obtido a partir de medições e cálculos efetuados sobre as folhas básicas da Carta do Império do Brasil, publicada em 1883. [The first official estimate of the surface area of the Brazilian territory dates from 1889. A value of 8,337,218 km2 was obtained from measurements and calculations made on drafts of the Map of the Empire of Brazil, published in 1883.]
^ abRodríguez, Jaime; Vincent, Kathryn (1997). "The Colonization and Loss of Texas: A Mexican Perspective". Myths, Misdeeds and Misunderstandings: The Roots of Conflict in US-Mexican Relations (First ed.). Wilmington, DE, USA: Scholarly Resources Inc. p. 47. ISBN0-8420-2662-2. Archived from the original on 15 June 2020. Retrieved 14 May 2020. When it was founded in 1821, the Mexican Empire extended over 4,429,000 km2 (not including the 445,683 km2 temporarily added by the short-lived union of the Central American provinces).
^ abAshworth, Philip Arthur; and, others (1911). "Germany" . In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 11 (11th ed.). Cambridge University Press. pp. 804–828. Area English Sq. m. [...] German Empire: 208,780 Area (estimated) sq. m. [...] Total dependencies: 1,006,412
^ abCornell, James (1978). Lost Lands and Forgotten People. Sterling Publishing Company. p. 24. ISBN978-0-8069-3926-1. Zimbabwe continued to grow, reaching the height of its power in 1700, under the rule of the Rozwi people. When the first Europeans arrived on the African coast, they heard tales of a great stone city, the capital of a vast empire. The tales were true, for the Rozwi controlled 240,000 square miles (624,000 sq km)
^ abBriliant, Oscar; and, others (1911). "Austria-Hungary" . In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 03 (11th ed.). Cambridge University Press. pp. 2–39. It occupies about the sixteenth part of the total area of Europe, with an area (1905) of 239,977 sq. m.
^ abSingh, Amarpal (15 August 2010). The First Anglo-Sikh War. Amberley Publishing Limited. ISBN978-1-4456-2038-1. By 1839, the year of his death, the Sikh kingdom extended from Tibet and Kashmir to Sind and from the Khyber Pass to the Himalayas in the east. It spanned 600 miles from east to west and 350 miles from north to south, comprising an area of just over 200,000 square miles.
^ abRashev, Rasho (2008). Българската езическа култура VII -IX в./Bulgarian Pagan Culture VII – IX cтр. 38 (in Bulgarian). Класика и стил. ISBN9789543270392.