1861, April 12 First guns are fired in Civil War at Union installation at Fort Sumter, South Carolina, over question of southern states' right to secede from the Union.
Pettis County Missouri (Vacant / Not In Use) has 1 places on the National Register of Historic Places.
Some of the country's most noteable architects helped create the Pettis County places including Henry Jones and Robert Barnhart. Prominent architectural styles found in Pettis Country are Georgian and Italianate.