Which Amendment provides for an individual's right to freedom of speech?

The 1st Amendment is pivotal in protecting an individual's right to freedom of speech, making it a foundational element of American democratic principles. Ratified in 1791 as part of the Bill of Rights, the 1st Amendment explicitly states that "Congress shall make no law...abridging the freedom of speech," thereby ensuring that individuals can express themselves without government interference. This right encompasses various forms of expression, including spoken, written, and symbolic speech.

The other amendments mentioned do not primarily address freedom of speech. The 5th Amendment deals with rights related to legal proceedings and protections against self-incrimination, while the 9th Amendment acknowledges the existence of rights not specifically enumerated in the Constitution, but it does not assert any particular rights like freedom of speech. The 13th Amendment is focused on abolishing slavery and involuntary servitude, which is unrelated to free speech. Thus, the 1st Amendment's guarantee of freedom of speech is essential for maintaining an open society where differing views can be expressed and discussed.