How was terrorism and intimidation used to deny blacks the freedoms promised by the 13th, 14th and 15th Amendments?

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).

b) the confederacy had to pay all union war expenses.

it is a : ) always outside of government control