“We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defense, 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.” From the Constitution.
The Constitution is important because it sets the government and places limits on it so that it does not become too powerful. It also guarantees every American fundamental rights and protection of life, liberty, and property.
James Madison is known as the Father of the Constitution
Alexander Hamilton also assisted in the writing of the Constitution as well as many other historical figures.