Because Congress was unable to stop Shays's Rebellion and the Pennsylvania Mutiny, it feared the

A. spread of future rebellions and anarchy.

B. spread of slavery into western territories.

C. rejection of the union by states.

B. creation of new rebellious states.

A. spread of future rebellions and anarchy. This proved that the Articles of Confederation was not strong enough to enforce the laws as well saw the need for a strong government to keep all the states in check. This led to replacement of the Articles of Confederation with a new Constitution.