The Mongol Empire was an imperial state of Central Asia, founded in 1206 by Genghis Khan, who managed to impose his authority over all Mongolian tribes. It is the second largest empire in history, after the British Empire, as it covered some 24,000,000 km². It included the present territories of Mongolia, China, Korea, Iran, Iraq, Afghanistan, Kyrgyzstan, Uzbekistan, Turkmenistan Kazakhstan, and parts of Turkey and Russia. It stretched from the Danube River in Europe to the Korean (South & North) Peninsula in Asia.

Feudal System - a political, economic and social system, which prevailed in Western and Central Europe during much of the Middle Ages, and in Eastern Europe during the Modern Age.