Which amendment grants the right to free speech?

The First Amendment of the United States Constitution is the cornerstone of American free speech rights. It specifically prohibits Congress from making laws that abridge the freedom of speech, the press, the right to assemble peacefully, and the right to petition the government for changes. This amendment was ratified in 1791 as part of the Bill of Rights and has played a pivotal role in protecting the expression of ideas and opinions, allowing individuals to freely communicate without government interference.

The other amendments listed do address important rights, but they do not specifically grant the right to free speech. The Second Amendment relates to the right to bear arms, the Fifth Amendment outlines rights related to legal proceedings and protection against self-incrimination, and the Ninth Amendment addresses the rights of the people that are not specifically enumerated in the Constitution. Therefore, the First Amendment is uniquely significant as it directly ensures the fundamental right to free speech in the United States.