South Dakota

The US state of South Dakota is south of the US state of North Dakota.

The US state of North Dakota is north of South Dakota.

Yankton, South Dakota is on the border of South Dakota and Nebraska as are North Siuox City and Dakota Dunes, South Dakota.

Big Stone City, South Dakota is on the border of South Dakota and Minnesota.

Lemmon, South Dakota is located on the border of South Dakota and North Dakota.

South Dakota did not have any 'colonial days' because South Dakota was not a colony. South Dakota was part of the Dakota Territory, so South Dakota had 'territorial days'.