Under the articles of confederation, the was signed in 1783, officially ending the revolutionary war.
a.
constitution
b.
treaty of paris
c.
northwest ordinance
d.
declaration of independence

Under the Articles of Confederation, the Treaty of Paris was signed in 1783, officially ending the Revolutionary War. It should be noted that this was practically the only power that was granted to the US government under the Articles of Confederation. They were later replaced by the Constitution. 

Iwould say a, due to the fact these routes display many things that would be useful and provide explanations for how states are known.