Which statement accurately describes one of theodore roosevelt's accomplishments as president? a. he led the united states to victory in world war i. b. he granted u. s. citizenship to all native americans. c. he negotiated a peace treaty between russia and japan. d. he gave the philippine islands their independence.

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).

b - those executed came from every social and economic class