Statistics for Largest Countries in History

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Greatest extent	Answer	% Correct
36,666,630 sq. km.	British Empire and Commonwealth	99%
11,965,800 sq. km.	Chinese Empire	92%
9,572,900 sq. km.	Peoples Republic of China	92%
33,152,000 sq. km.	Mongol Empire	91%
17,073,280 sq. km.	Russian Federation	91%
10,146,923 sq. km.	United States of America	87%
12,595,170 sq. km.	French Colonial Empire	83%
19,425,000 sq. km.	Spanish Colonial Empire	83%
9,968,910 sq. km.	Canada	82%
5,698,000 sq. km.	Roman Empire	79%
8,547,404 sq. km.	Federative Republic of Brazil	76%
8,892,418 sq. km.	Portuguese Colonial Empire	76%
25,598,500 sq. km.	Soviet Bloc	76%
5,594,400 sq. km.	Ottoman Empire	72%
8,152,550 sq. km.	Commonwealth of Australia	66%
7,417,760 sq. km.	Japanese Empire	65%
6,169,380 sq. km.	Persian Empire	65%
5,439,000 sq. km.	Macedonian Empire	43%
13,209,000 sq. km.	Caliphate	32%
5,957,000 sq. km.	Great Seljuq Empire	6%
7,770,000 sq. km.	Uighur Khaghanate	2%