Here are the answers to your questions based on the American System:
Question 1: The American System can BEST be described as a ___ plan.
Answer: A. economic
Question 2: The MAIN purpose of the protective tariff was to __________.
Answer: D. encourage domestic industry
Question 3: The issue of building roads and canals could be said to boil down to which issue?
Answer: B. Federalism
If you have more questions or need further assistance, feel free to ask!