4. A) They feared debt-ridden farmers would rebel.
5. D) a two-house Congress with equal representation in the upper house and representation in the lower house based on population.
Explanation:
After the American Revolution, farmers in Massachusetts launched Shay's Rebellion in response to perceived government neglect and the way the debt they were in was being settled by creditors.
The Federal Government was powerless to quell this rebellion because the Articles of Confederation gave them limited powers. They ended up having to rely on state militia. This showed states that a stronger Federal Government was needed.
The Great Compromise came about as states argued about the composition of the Legislature. Some wanted equal representation and others wanted representation based on population.
They then agreed to have two houses: The Senate (Upper house) which would have equal representation and the House of Representatives (Lower house) where representation was based on population.