Greatest extent
|
Answer
|
36,666,630 sq. km.
|
British Empire and Commonwealth
|
33,152,000 sq. km.
|
Mongol Empire
|
25,598,500 sq. km.
|
Soviet Bloc
|
19,425,000 sq. km.
|
Spanish Colonial Empire
|
17,073,280 sq. km.
|
Russian Federation
|
13,209,000 sq. km.
|
Caliphate
|
12,595,170 sq. km.
|
French Colonial Empire
|
11,965,800 sq. km.
|
Chinese Empire
|
10,146,923 sq. km.
|
United States of America
|
9,968,910 sq. km.
|
Canada
|
9,572,900 sq. km.
|
Peoples Republic of China
|
8,892,418 sq. km.
|
Portuguese Colonial Empire
|
8,547,404 sq. km.
|
Federative Republic of Brazil
|
8,152,550 sq. km.
|
Commonwealth of Australia
|
7,770,000 sq. km.
|
Uighur Khaghanate
|
7,417,760 sq. km.
|
Japanese Empire
|
6,169,380 sq. km.
|
Persian Empire
|
5,957,000 sq. km.
|
Great Seljuq Empire
|
5,698,000 sq. km.
|
Roman Empire
|
5,594,400 sq. km.
|
Ottoman Empire
|
5,439,000 sq. km.
|
Macedonian Empire
|
|