The main reason for the U.S. go involved would be D.
A) black American could set their own laws for their community!!
1) Nationalism
2)Assasination of Ferdinand
3)Isolationism
The reason the battle of Yorktown was successful was because cornwalis sunrenender was he was out numbered so he surenedred and america won and the treaty of paris was made because so they would know america was theirs at all times.
hope this helps
March 1, 1781 - Maryland delegates signed the ratification of the Articles of Confederation. The Articles were finally ratified by all thirteen states.
February 21, 1787 - Congress approved a plan to hold a convention in Philadelphia to revise the Articles of Confederation.