Videos of Chinese flags filling San Francisco have surfaced amid Chinese President Xi Jinping's visit to the city for the Asia-Pacific Economic Cooperation summit.
The Preamble to the United States Constitution is a brief introductory statement that sets forth the general principles and purposes of the Constitution.
The ratification of the United States Constitution was a pivotal moment in American history, marking the establishment of the federal government's structure and solidifying the nation's foundational laws.
