By 1787 in the United States, states were taxing goods from other states and printing their own money, congress was weak and had no strong leaders, and the federal government could not force the follow national laws. This led to ...

The correct answer is:

The creation of the new Constitution.

Explanation:

The troubles the nation was facing after gaining independency from Britain led to the Constitutional Convention of 1787, which had as main propose to revise the Articles of Confederation but ended up with the creation of the United States Constitution.

The Constitutional Convention of 1787 took place in the Old Pennsylvania State House, Philadelphia. Delegates of the Congress such as James Madison agreed that instead of amending the Articles of Confederation, they needed to create a new form of government that gave more power to federal government so it could be able to regulate relations between states and preserve the union while keeping the sovereignity of the states. This led to the creation of the United States Constitution.