Answer:
The Declaration of Independence and the Constitution provide the ideological foundations for the democratic government of the United States. The US government is based on ideas of limited government, including natural rights, popular sovereignty, republicanism, and social contract. These ideas are reflected in two of the United States' foundational documents, the Declaration of Independence and the Constitution. Framed in 1787 and in effect since March 1789, the Constitution of the United States of America fulfilled the promise of the Declaration by establishing a republican form of government with separate executive, legislative, and judicial branches.