the framers of the us constitution needed to compromise on the three key issues. what we’re the key issues, and what was the disagreement regarding each issues?

1.  Issue of Power balance between Federal government and State government.

2.  Issue of State Representation between large and small states.

3.  Issue of Abolishment of Slavery

Explanation:

1. Issue of Power balance between the Federal government and State government: the disagreement was which government should hold more power, State or Federal?

2. Issue of State Representation between large and small states: the disagreement was should the number of representatives at the federal level for each States in terms of the population be different or the same?

3. Issue of Abolishment of Slavery: the disagreement, was whether to retain the slave trade or abolish the practice completely.

d. both had been uninhabited before settlers arrived.