Answer:
The root issue for the nullification crisis was:
B States wanted to nullify federal laws that they deemed unconstitutional
Explanation:
The Nullification crisis has its roots in the refusal to collect tariffs between 1828 and 1832 by the state of South Carolina.
I believe it's industrialization. <span />
Answer:The Compromise of 1850 postponed the splitting of the American Union and the outbreak of the US Civil War between the North and the South.
Between 3200 and 2350 B.C.E., they had evolved into city-states (the control of the surrounding region).