Max Size (km^2)
|
Year
|
Answer
|
217,514
|
-3000--2500
|
Egypt
|
531,616
|
-2500--1556
|
Indus River Valley Civilization
|
1,031,694
|
-1556--1046
|
Shang
|
1,031,694
|
-1046--900
|
Zhou
|
2,414,228
|
-900--550
|
Indo-Aryan Civilization
|
5,557,084
|
-550--329
|
Achaemenid
|
5,381,502
|
-329--323
|
Macedonia
|
5,244,900
|
-323--301
|
Diadochi
|
3,476,365
|
-301--297
|
Seleucid
|
3,939,396
|
-297--199
|
Maurya
|
4,007,109
|
-199--108
|
Xiongnu
|
4,672,303
|
-108-9
|
Han
|
4,672,303
|
9-19
|
Xin
|
4,394,561
|
19-51
|
Xiongnu
|
4,757,792
|
51-103
|
Han
|
4,780,762
|
103-251
|
Roman Empire
|
5,137,407
|
251-573
|
Sassanid
|
5,202,783
|
573-583
|
Göktürks
|
5,493,945
|
583-631
|
Sassanid
|
7,956,957
|
631-671
|
Tang
|
9,648,897
|
671-750
|
Umayyad
|
9,589,767
|
750-876
|
Abbasid
|
3,092,701
|
876-907
|
Tang
|
2,953,377
|
907-910
|
Abbasid
|
2,747,551
|
910-937
|
Samanid
|
2,621,549
|
937-978
|
Liao / Khitan
|
|
Max Size (km^2)
|
Year
|
Answer
|
2,898,271
|
978-1071
|
Song
|
4,593,613
|
1071-1096
|
Seljuk
|
2,847,498
|
1096-1127
|
Song
|
2,787,625
|
1127-1146
|
Almoravid
|
2,201,544
|
1146-1203
|
Jin
|
2,448,518
|
1203-1207
|
Ghurid
|
2,211,732
|
1207
|
Mongol
|
2,989,347
|
1207-1213
|
Khwarazm
|
22,162,740
|
1213-1271
|
Mongol
|
10,426,181
|
1271-1371
|
Yuan
|
3,811,590
|
1371-1381
|
Ming
|
4,599,662
|
1381-1393
|
Golden Horde
|
5,408,908
|
1393-1411
|
Timurid
|
5,134,505
|
1411-1540
|
Ming
|
7,096,157
|
1540-1580
|
Spain
|
8,811,989
|
1580-1639
|
Iberian Union
|
15,774,027
|
1639-1763
|
Russia
|
18,081,493
|
1763-1798
|
Spain
|
21,048,358
|
1798-1829
|
Russia
|
23,170,748
|
1829-1870
|
United Kingdom
|
22,535,579
|
1870-1899
|
Russia
|
22,880,324
|
1899-1901
|
United Kingdom
|
22,535,579
|
1901-1922
|
Russia
|
22,355,264
|
1922-1991
|
Soviet Union
|
16,947,460
|
1991-
|
Russia
|
|