Answer:
The answer is D.Lessons learned in setting up state governments were helpful in setting up the United States government.
Step-by-step explanation:
A federal government lead by the congress and an executive president that was selected by the entire population of the country was required to unify the states and to lead the nation to achieve her common goals. While respecting the individual states and their ability to decide for themselves, this central government requirement was sen by the forefathers.