Whats was the northern economy like during the civil war

The northeners hated slavery and wanted to abolish it for good in america.

Explanation: Both north and south wanted a seat in the government to get the entire country on there side of slavery. however anger between the two  began to rise eventualy leading to the Civil War.

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).

may i have the answer choices?