Which of the following was most important for French fur traders? A. following the spanish pattern of settlement
B. keeping european goods from reaching american indians
C. maintaining good relations with americans
D. limiting the number of Europeans allowed to settle in quebec

pretty sure it's C, if by Americans it's referring to Native Americans

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).