The Constitution has three parts. There is an introduction called the Preamble, seven articles that describe the plan of the national government, and the amendments, or changes to the Constitution.
The first paragraph of the Constitution states the basic purposes of the new plan of government: (1) to create a union where the states work together; (2) to create a system of laws that are fair; (3) to keep peace within the country; (4) to protect the nation from outside attack; (5) to improve the lives of all Americans; and (6) to make sure that our free society survives in the future.
Preamble
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.