<span>5% sales tax on consumer goods & services goes into effect in USSR was probably the most major thing that occured. </span>
Well it's in your question it was the North of America, the people who didn't like slaves and thought the south was wrong. Everything term you used is considered for the North of America during the American Civil War.
The answer is C. Is the assertion that consumer preferences determine the production of goods and services. Same answer.
1 would be A
2 would be C
3 would be B