What was the first ten-amendment package added to the U.S. Constitution in 1791?

The Bill of Rights was the first ten-amendment package added to the U.S. Constitution in 1791.

The amendments were proposed by Congress in 1789 and ratified by the states on December 15, 1791. They protect civil liberties and place limits on federal power. Their provisions include freedoms of religion, speech, press, assembly, and petition, along with protections involving criminal procedure, arms, searches, and due process.

James Madison introduced the amendments in Congress after concerns that the Constitution lacked explicit protections for individual rights. The amendments were influenced by state declarations of rights and earlier English legal traditions. Madison originally proposed twelve amendments, but the states ratified ten of them in 1791.

The two proposals that were not initially ratified did not become the modern First and Second Amendments. One concerned congressional apportionment and remains technically pending; the other eventually became the Twenty-Seventh Amendment in 1992. The Bill of Rights originally restricted the federal government, while later constitutional interpretation applied many protections to the states through the Fourteenth Amendment.