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.
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.[37]
Empire | Land area (million km2) | Year |
---|---|---|
Upper and Lower Egypt | 0.1[23] | 3000 BC[23] |
Old Kingdom of Egypt | 0.25[23] | 2850 BC[23] |
0.4[23] | 2400 BC[23] | |
Akkadian Empire | 0.65[23] | 2300 BC[23] |
0.8[23] | 2250 BC[23] | |
New Kingdom of Egypt | 1.0[23] | 1450 BC[23] |
Shang dynasty | 1.25[23] | 1122 BC[23] |
Neo-Assyrian Empire | 1.4[23] | 670 BC[23] |
Median Empire[a] | 2.8[11] | 585 BC[11] |
Achaemenid Empire | 3.6[11] | 539 BC[11] |
5.5[11] | 500 BC[11] | |
Xiongnu Empire | 9.0[11] | 176 BC[11] |
Umayyad Caliphate | 11.1[9] | 720[9] |
Mongol Empire | 13.5[9] | 1227[9] |
24.0[9] | 1309[9] | |
British Empire | 24.5[9] | 1880[9] |
35.5[9] | 1920[9] | |
Timeline of largest empires at the time
Empire | Land area during time as largest empire (million km2)[28] | Approximate period[28] |
---|---|---|
Upper Egypt | 0.1 | 3000 BC |
Old Kingdom of Egypt | 0.25–0.4 | 2800 BC – 2400 BC |
Akkadian Empire | 0.2–0.6 | 2300 BC – 2200 BC |
Indus Valley Civilisation[a] | 0.15 | 2100 BC |
Middle Kingdom of Egypt | 0.2–0.5 | 2000 BC – 1800 BC |
Xia dynasty | 0.4 | 1700 BC |
Hyksos | 0.65 | 1600 BC |
New Kingdom of Egypt | 0.65–1.0 | 1500 BC – 1300 BC |
Shang dynasty | 0.9–1.1 | 1250 BC – 1150 BC |
New Kingdom of Egypt | 0.5–0.6 | 1100 BC – 1050 BC |
Zhou dynasty | 0.35–0.45 | 1000 BC – 900 BC |
Neo-Assyrian Empire | 0.4–1.4 | 850 BC – 650 BC |
Median Empire[b] | 3.0 | 600 BC |
Achaemenid Empire | 2.5–5.5 | 550 BC – 350 BC |
Macedonian Empire | 5.2 | 323 BC |
Seleucid Empire | 4.0 | 300 BC |
Maurya Empire | 3.5 | 250 BC |
Han dynasty | 2.5 | 200 BC |
Xiongnu Empire | 5.7 | 150 BC |
Han dynasty | 4.2–6.5 | 100 BC – 200 AD |
Roman Empire | 4.4 | 250–350 |
Sasanian Empire | 3.5 | 400 |
Hunnic Empire | 4.0 | 450 |
Sasanian Empire | 3.5 | 500 |
Göktürk Khaganate | 3.0–5.2 | 550–600 |
Rashidun Caliphate | 5.2 | 650 |
Umayyad Caliphate | 9.0–11.0 | 700–750 |
Abbasid Caliphate | 8.3–11.0 | 750–800 |
Tibet | 2.5–4.7 | 850–950 |
Song dynasty | 3.0 | 1000 |
Seljuk Empire | 3.0–4.0 | 1050–1100 |
Tibet | 2.5 | 1150 |
Jin dynasty (1115–1234) | 2.3 | 1200 |
Mongol Empire | 18.0–24.0 | 1250–1300 |
Yuan dynasty | 11.0 | 1350 |
Timurid Empire | 4.0 | 1400 |
Ming dynasty | 4.7–6.5 | 1450–1500 |
Ottoman Empire | 4.3 | 1550 |
Tsardom of Russia | 6.0–12.0 | 1600–1700 |
Russian Empire | 14.0–17.0 | 1750–1800 |
British Empire | 23.0–34.0 | 1850–1925 |
Soviet Union | 22.5 | 1950–1975 |
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.[38] 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.[39]
Empire | Empire population as percentage of world population[40] | Year[40] |
---|---|---|
Qing dynasty | 37 | 1800 |
Northern Song dynasty | 33 | 1100 |
Western Han dynasty | 32 | 1 |
Mongol Empire | 31 | 1290 |
Roman Empire | 30 | 150 |
Jin dynasty (266–420) | 28 | 280 |
Ming dynasty | 28 | 1600 |
Qin dynasty | 24 | 220 BC |
Mughal Empire | 24 | 1700 |
Tang dynasty | 23 | 900 |
Delhi Sultanate | 23 | 1350 |
British Empire | 23 | 1938 |
Empire of Japan | 20 | 1943 |
Maurya Empire | 19 | 250 BC |
Former Qin | 19 | 376 |
Northern Zhou | 16 | 580 |
Macedonian Empire | 15 | 323 BC |
Empire of Harsha | 15 | 647 |
Gupta Empire | 13 | 450 |
Northern Wei | 13 | 500 |
Umayyad Caliphate | 13 | 750 |
Achaemenid Empire | 12 | 450 BC |
Former Yan | 12 | 366 |
Jin dynasty (1115–1234) | 12 | 1200 |
Nazi Germany | 12 | 1943 |