The Islamic empire expanded due to their violent forces and smart thinking. One example of their empire expanding that was due to their forces was in 636 CE when they fought the Eastern Roman Empire. During this time Al-Biladuri wrote in "The Battle of Yarmuk and After" and stated that Muslims fought one of the most fiercest and bloodiest kind of war and defeated 70,000 Greeks with only 24,000 Muslims who took part. Given the fact that the Muslims were so tough, they could easily win several battles. By defeating others in battles they would be able to conquer more territories and continue expanding. Not only did their forces use violence, but they used skillful thinking. They created The Treaty of Tudmir which stated that people would have
