4. how many years passed between the writing and the adoption of the u. s. constitution? explain what
was happening during this time.

It took nearly four years between the writing and the adoption of the U.S. Constitution

Explanation:

The resolution was first declared on June 4, 1776, stating about the break between the union of Britain and the states. Due to the declaration of the independence the resolution was postponed. The time between is also referred as "Continental Congress".

The US constitution was implemented after 1789, it took two year and a lot of conventions between the states to finalize.  Since 1789, the constitution was implemented and small changes were introduced 27 times till now. The main changes were the bill of rights taking up 10 total amendments while the Reconstruction one took three.

increase in population

c, because the american revolution was from 1765 to 1783.