有声读物: United States Constitution and Amendments

The Constitution is the charter of government and the supreme law of the United States of America. It was signed by delegates to the Constitutional Convention in Philadelphia, Pennsylvania, on September 17, 1787. The first 10 amendments, known as the Bill of Rights, were ratified together in 1791. Amendments 11 through 27 were ratified separately from 1795 through 1992. (Summary by Laurie Anne Walden)