Jeannette Rankin of Montana becomes the first female member of the United States House of Representatives.

Jeannette Pickering Rankin was an American politician and women's rights advocate who became the first woman to hold federal office in the United States. She was elected to the U.S. House of Representatives as a Republican from Montana in 1916 for one term, then was elected again in 1940. Rankin remains the only woman ever elected to Congress from Montana.

Montana is a landlocked state in the Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, and the Canadian provinces of Alberta, British Columbia, and Saskatchewan to the north. It is the fourth-largest state by area, but the eighth-least populous state and the third-least densely populated state. Its capital is Helena, while the most populous city is Billings. The western half of the state contains numerous mountain ranges, while the eastern half is characterized by western prairie terrain and badlands, with smaller mountain ranges found throughout the state.

The United States House of Representatives is a chamber of the bicameral United States Congress; it is the lower house, with the U.S. Senate being the upper house. Together, the House and Senate have the authority under Article One of the U.S. Constitution in enumerated matters to pass or defeat federal government legislation, known as bills. Those that are also passed by the Senate are sent to the president for signature or veto. The House's exclusive powers include initiating all revenue bills, impeaching federal officers, and electing the president if no candidate receives a majority of votes in the Electoral College.

March 4 is the 63rd day of the year in the Gregorian calendar; 302 days remain until the end of the year.