https://www.historypod.net/03/06/6th-march-1820-the-missouri-compromise-passed-by-the-united-states-congress-to-resolve-disagreements-over-slavery-in-the-western-territories/
6th March 1820: The Missouri Compromise passed by the United States Congress to resolve...
Feb 24, 2026 - Missouri was admitted as a slave state while Maine, previously part of Massachusetts, was admitted as a free state to preserve the numerical balance in the...
the missouri compromiseunited states congresspassed bymarchresolve
https://www.geographicguide.com/united-states/historical-maps/map-1820.htm
US Map, Missouri Compromise, Free and Slave States - 1820
us mapmissouri compromiseslave statesfree
https://thisdayofhistory.com/tag/the-missouri-compromise/
The Missouri Compromise Archives - This Day of History
the missouri compromisethis dayarchiveshistory