The marshall plan was a foreign aid program put in place after world war ii in the 1960s in the 1970s after world war i

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).

the answer should be founding brothers. i hope i you!