What could the us government have done to improve the economy in european nations before the great depression?

the answer is a. laws were enacted in the aftermath of the plot to make it harder to free slaves,increasing sectionalism

the answer is c. hope is

can someone me with this question:  

1) the end of the conflict between the north and the south didn’t just mark the end of a war; it marked the end of an entire way of life.” which statement best describes what this statement means?  

a) the southerners were no longer free and were controlled by the northern states.

b) the industrial economy in the north was not sustainable.

c) slavery became illegal, which changed completely the south’s labor force and the agricultural economy was destroyed.

d) the states decided to relinquish their independence and return to britain’s rule.