1. Battle of Fort Blakeley: On July 3, 1865, the Battle of Fort Blakeley took place in Baldwin County, Alabama. This battle was one of the last major battles of the American Civil War and resulted in a Union victory.

2. NASA's first lunar lander test flight: On July 3, 1966, the Lunar Landing Research Vehicle (LLRV) made its first test flight at the Marshall Space Flight Center in Huntsville, Alabama. The LLRV was a prototype of the lunar lander that NASA used during the Apollo missions.

3. Alabama becomes a state: On July 3, 1819, Alabama became the 22nd state in the United States. The state was admitted into the Union after years of debate about whether it should be a slave state or a free state.

4. Hank Aaron breaks Babe Ruth's record: On July 3, 1970, Hank Aaron hit his 500th career home run, breaking Babe Ruth's record. The home run occurred during a game between the Atlanta Braves and the San Francisco Giants at Atlanta-Fulton County Stadium in Atlanta, Georgia.

5. Montgomery Bus Boycott: On July 3, 1956, the Montgomery Bus Boycott ended after more than a year of protests. The boycott began on December 5, 1955, after Rosa Parks was arrested for refusing to give up her seat on a Montgomery bus to a white passenger. The boycott was a pivotal moment in the Civil Rights Movement and helped to bring an end to segregation on public transportation.