Milepost 423.9-Â Tennessee Valley Divide: When Tennessee joined the Union in 1796, this watershed was the boundary between the United States to the north and the Chickasaw Nation to the south.
Natchez Trace CompactNatchez Trace CompactMilepost 423.9-Â Tennessee Valley Divide: When Tennessee joined the Union in 1796, this watershed was the boundary between the United States to the north and the Chickasaw Nation to the south.
