After hitler became dictator, he
a. ordered the burning of the reichstag.
b. arrested and jailed weimar officials.
c. banned all opposing political parties.
d. blamed socialists for germany’s problems.

c.banned all opposing political parties.

Explanation:

got it right on EDG 2020

b

explanation:

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).