Answer:
The Preamble of the U.S. Constitution—the document’s famous first fifty-two words— introduces everything that is to follow in the Constitution’s seven articles and twenty-seven amendments. It proclaims who is adopting this Constitution: “We the People of the United States.” It describes why it is being adopted—the purposes behind the enactment of America’s charter of government. And it describes what is being adopted: “this Constitution”—a single authoritative written text to serve as fundamental law of the land. Written constitutionalism was a distinctively American innovation, and one that the framing generation considered the new nation’s greatest contribution to the science of government.