The Mongol conquests of the 13th century resulted in widespread and well-documented destruction. The Mongol army conquered hundreds of cities and villages and killed millions of people. One estimate is that about 11% of the world's population was killed either during or immediately after the Mongol invasions, around 37.75–60 million people in Eurasia. These events are regarded as some of the most deadly acts of mass killing in human history.
