Asmaller conflict over slavery, which prefigured the american civil war, was fought in which state during the late 1850s

answer; i believe the above statement is (true);

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).