What system of government was in place after the united states adopted the u. s. constitution?

Declaration of Independence

It was the Articles of Confederation that provided the necessary structure to the new nation during and after the American Revolution. The Declaration, however, did set forth the ideas of natural rights and the social contract that would help form the foundation of constitutional government.

Explanation:

lincoln declared that slavery should not be allowed to spread into the new states, and of course this angered the south at the time.

i dont know the answer sorry but if i knew it i would of told you