1. In 1784, New Hampshire became the ninth state to ratify the US Constitution, ensuring its adoption.
2. On March 2, 1820, President James Monroe signed the Missouri Compromise, which allowed Missouri to become a slave state while Maine was admitted as a free state. This agreement helped maintain the balance between free and slave states in Congress.
3. In 1876, the US government officially recognized Alexander Graham Bell as the inventor of the telephone. Bell had conducted much of his early experimenting and testing of the telephone in his laboratory at his home in Salem, New Hampshire.
4. On March 2, 1933, the State of New Hampshire officially ratified the 21st Amendment of the US Constitution, which repealed Prohibition and ended the era of alcohol prohibition in the United States.
5. On March 2, 1972, the US Supreme Court issued its landmark ruling in the case of Furman v. Georgia, which declared the death penalty unconstitutional as applied in those cases. The decision effectively placed a moratorium on capital punishment throughout the US until states could revise their laws to satisfy the court's concerns.