History tools: compare, rank, explore

Four tools built on the 300 largest and longest-lasting empires of our history map: compare empires, see records, explore the world in any year, or test yourself with a quiz.

Empire 1Empire 2Empire 3

	Roman Empire	Mongol Empire
Period	31 BC – AD 394	AD 1206 – AD 1293
Duration	424 years	87 years
Peak year	AD 117	AD 1279
Peak area	5.3 million km²	27.4 million km²
Era	Antiquity	Middle Ages

• At its peak, Mongol Empire was about 5.2× as large as Roman Empire.
• Roman Empire lasted about 4.9× as long as Mongol Empire.

Borders and dates: Cliopatria / Seshat Global History Databank (CC BY 4.0). Coastlines: Natural Earth. Text: Centaurian.