During the course of the US Civil War, slavery was legal in these "border states". There was also a small number of slaves in Delaware. In Washington DC, slavery was abolished in 1862.
Missouri was a slave state. Maryland and Kentucky were slave states.
Kentucky, Maryland, Delaware, and Missouri
Missouri, Maryland, Kentucky and Delaware.
Kentucky, Delaware, Maryland, and Missouri.
Delaware, Maryland, Missouri, and Kentucky.
Kentucky Missouri Maryland Delaware
Kentucky, Missouri, Maryland, Delaware.
Kentucky, Missouri, Maryland.
Kentucky, Missouri, Maryland, Delaware
Kentucky, Maryland, Missouri, Delaware
The US states of Kentucky, Missouri, Maryland and Delaware were known as border states. They did not join the Confederacy and were still slave states.
Kentucky, Missouri, Maryland, Delaware, West Virginia.