Why was it important that the Constitution gave the federal government the power to "ensure domestic tranquility"

Answer:The Confederation Congress had no power to put down rebellions.

Explanation:Shays' Rebellion in Massachusetts showed how weak the Articles of Confederation were. The Confederation Congress had no power to raise an army and put down the rebellion. Even George Washington realized the need for a stronger central government to keep the peace in the states.

the main goal of the convention was to preserve the sovereignty of the states and position the federal government to assist states in times of rebellion between states over borders, trade and other disagreements.

Explanation:

Domestic tranquility, as used in the preamble to the U. S. Constitution, provides the right of citizens to a secure and lawful environment and charges the federal government with the duty to protect that right.

the main goal of the convention was to preserve the sovereignty of the states and position the federal government to assist states in times of rebellion between states over borders, trade and other disagreements.

the constitution goes thus "We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America".