December 14, 1819
Alabama became the 22nd state on Dec. 14, 1819, the only state added to the United States that year. The young United States acquired the British claims to all lands east of the Mississippi River, including present-day Alabama, as part of the treaty that ended the American Revolution. Alabama was originally part of the Mississippi Territory, which up until then was claimed by the colony of Georgia. Under pressure from white Southerners to see two slave states emerge, Congress created the Alabama Territory out of the eastern half of the Mississippi Territory on March 3, 1817. William Wyatt Bibb was named governor. The population grew rapidly, which led to petitions for statehood, which was granted two years later.
Read More at Encyclopedia of Alabama.
For more on Alabama’s Bicentennial, visit Alabama 200.