Map of the states and territories of the United States as it was from December 1819 to 1820. On December 14 1819, Alabama Territory was admitted as the state of Alabama. On March 16 1820, the northern district of Massachusetts was admitted as the state of Maine.
{{Information| |Description=Map of the states and territories of the United States as it was from |Source= |Date= |Author=Made by User:Golbez. |Permission=Own work, attribution required (Multi-license with GFDL and Creative Commons CC-BY 2.5) |other_