Which of the following empires was the largest at its peak?

Roman empire
2241
Incan empire
407
empire of Alexander the Great
2520
empire of Mongols
6404
The Mongol Empire stretched from eastern Europe to southern China, including also much of India and Arabia. In the 13th century, the Mongols attacked Poland, Japan and Java. There was only one larger empire in the history: the British Empire of the 19th century.
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Kasia
reach: rather globalempireshistoryMongols