What was hte effect of ralph nader's book unsafe at any speed?
a. train track crossing were equipped with lowering gas
b. certain drugs were declared illegal
c. bicycle helmets laws were passed in several states d. seat belts made mandatory in cars

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).

if i am correct the answer is going to be a) the federal program of reconstruction ended.

the policy of appeasement influenced the beginning of ww2 because hitler gave the other countrys chocies but after they choose to try and appease hitler to not invade their country but he still invaded them.