1. On March 4, 1867, Alabama was readmitted to the Union after the Civil War. This marked the end of an extended period of military rule and the beginning of reconstruction efforts in the state.

2. March 4, 1915, marks the founding of the Alabama Polytechnic Institute (now Auburn University) in Auburn, Alabama. The school has since grown into one of the largest and most respected universities in the state.

3. In 1933, the state of Alabama enacted the first sales tax in the nation, which went into effect on March 4 of that year. The tax was initially set at 2%, but it has been increased several times since then.

4. On March 4, 1965, protests broke out in Selma, Alabama, over the disenfranchisement of African American voters. The events that followed, including the infamous "Bloody Sunday" incident, would become an important turning point in the civil rights movement.

5. March 4, 1993, saw the formation of the Tuskegee Airmen National Historic Site in Tuskegee, Alabama. The site commemorates the contributions of the Tuskegee Airmen, the first African American military aviators who fought during World War II.