请将下面这段话翻译成英文：

　　成吉思汗(Genghis Khan)是世界历史上杰出的政治家和军事家。1206年，他统一草原上的各个部落，建立了大蒙古国(the Mongol Empire)。建国之后，成吉思汗多次发动战争，使蒙古帝国成为人类历史疆域最为广阔的国家。除了伟大的军事成就，成吉思汗在其他方面也推动了帝国的发展。他颁布法令创建蒙古人的书写文字，制定法律并促进宗教宽容。成吉思汗既是世界上著名的历史人物，又是一个极具争议的统治者。几百年来，有很多名人、学者从不同的角度对他进行了研究和探讨。

　　参考翻译:

　　Genghis Khan, an outstanding statesman and strategist in the history of the world, united the tribes on the grassland and founded the Mongol Empire in 1206. After that, he waged many wars, making the Mongol Empire the largest territory in the history of mankind. Apart from his great military accomplishments, Genghis Khan also advanced the empire in other ways. He decreed to create characters for Mongolian, made laws and promoted religious tolerance. Genghis Khan is not only a well-known historic figure in the world, but also a highly controversial ruler. For centuries, many celebrities and scholars have conducted researches and studies on him from different angles.