What sparked a riot in New York City in 1863?

food shortages and a rise in starvation

a draft that was unfair to the lower classes

a drop in employment in weapons factories

the suspension of the writ of habeas corpus

Verified Answer :

It was "a draft that was unfair to the lower classes" that sparked a riot in New York City in 1863, since many people felt it was unfair that the wealthy could avoid such a draft by paying money. 

Answer:

B) a draft that was unfair to the lower classes