Genghis Khan was born in 1162 in Mongolia and went on to unite the Mongol tribes and create the largest contiguous empire in history. He was raised by his mother after his father died when he was young. In 1206, he united the Mongol tribes under one rule. As leader, called Khan, he expanded the empire through conquest and tolerated other religions. When he died in 1227 at age 65, the Mongol Empire stretched from Eastern Europe to the Sea of Japan. His empire did not last, but he left a lasting legacy for Mongolia.