1. Georgia officially joined the Confederacy on March 20, 1861. As tensions rose between the North and South, Georgia voted to secede from the Union and became one of the original seven Confederate states.

2. On March 20, 1877, Georgia Governor Alfred H. Colquitt signed a bill that established the University of Georgia School of Law. Today, the UGA School of Law is one of the oldest and most prestigious law schools in the South.

3. In 1943, Georgia Governor Ellis Arnall signed a bill that raised the legal drinking age from 18 to 21. The law was meant to curb underage drinking during World War II, when many soldiers were stationed in Georgia.

4. March 20, 1952 marked the opening of the world's first dedicated cancer hospital, the Mary L. Uline Cancer Center in Atlanta, Georgia. The hospital was founded by Dr. Mary Uline, a leading oncologist and cancer researcher in the mid-20th century.

5. On March 20, 1980, the Georgia Dome opened in Atlanta as the world's largest cable-supported domed stadium. The Dome was the home of the NFL's Atlanta Falcons for over 20 years and hosted events such as the Super Bowl, NCAA Final Four, and Olympics. It was demolished in 2017 to make way for the new Mercedes-Benz Stadium.