The Mongol Empire conquered a vast territory from Central Asia to Eastern Europe during the 1200s-1300s. Led by Chinggis Khan, the Mongols had a highly organized military that allowed them to defeat large empires. Though the Mongols did not make many technological or cultural contributions, their empire temporarily united much of Eurasia and facilitated an increased exchange of goods and ideas. After Chinggis Khan's death, the Mongol Empire was divided among his descendants and their khanates. The Mongols established stability and trade but are also blamed for spreading plague throughout their conquered lands.