What was the name of our first national constitution?

Articles of Confederation. The Articles of Confederation and Perpetual Union was the first constitution of the United States. It was drafted by the Second Continental Congress from mid-1776 through late 1777, and ratification by all 13 states was completed by early 1781.

I’m not completely sure but it’s:

The Articles of Confederation

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.