What country fought in the war but did not sign the treaty of versailles a. france b. united states c. britain d. germany

the conditions that made the byzantine empire vulnerable to attacks by the muslin turks were the sack of constantinople by western crusaders, the conquests of the sultanate of rum, presence of rival kingdoms and finally the set up of fiefdoms at the empire which were owned by the ghazis (turkish warriors).

health and medicine because people are dying from not being healthy or not strong enough medicine