Founding Fathers: These were political leaders and statesmen who participated in the American Revolution by signing the United States Declaration of Independence, taking part in the American Revolutionary War, and establishing the United States Constitution.
U.S. Constitution: This is essentially America's rulebook. It outlines how our government works, including its three branches (executive, legislative, judicial), their powers, and citizens' rights.
American Revolution: This was a war fought from 1775-1783 between Great Britain and thirteen British colonies in North America which led to the formation of an independent country - The United States of America.