Answer:
The United States Constitution.
Explanation:
Constitution of United States is the main instrument of the US government and a supreme law of the land. It provided political stability, individual growth, economic growth, and social progress.
An article of confederation:
The article of confederation was set up in 1777 after the declaration of independence to form one nation. This article did not give any way to raise the money. Each state started making their own money and it caused argue among them. To make amendment in the confederation, in May 1787 a delegation met in present hall of independence in Philadelphia. It was needed to make a new plan of governing. George Washington was selected to be a president.
