The "Border States" were slave states.
The Union in the American Civil War represented the free states (meaning slave-free states) plus five border slave states in the north of America. The Confederate States of America (the Confederacy) comprised the eleven southern slave states which had seceded from the United States of America.
border states
Missouri's Southern border.
The Mason-Dixon line.
Missouri as a slave state and Maine as a free state.
None of the Border States seceded even though they were slave states.
Slave states. Some border states made attempts to secede, but for one reason or another, failed to do so.
The border between slave states and free states
The Border States. These were the slave-states that had voted to stay loyal. Kentucky, Missouri, Maryland, Delaware.
Some in the United States. California, Oregon, and Nevada were.
I think you are referring to the Border States that were not classified as slave states or free states.
Some in the United States. California, Oregon, and Nevada were.
The Mississippi River.
The Ohio
The Union in the American Civil War represented the free states (meaning slave-free states) plus five border slave states in the north of America. The Confederate States of America (the Confederacy) comprised the eleven southern slave states which had seceded from the United States of America.
Border states or Buffer states.
border states