What did these four states have in common at the start of the Civil War: Delaware, Missouri, Kentucky, and Maryland?

Delaware, Kentucky, Missouri, and Maryland were all slave states that didn't secede from the Union.

Kentucky, Maryland, Delaware, and Missouri were all border states, meaning that they were slave states that didn't secede from the Union like the other slave states did.

(They also were all slave states and start with a consonant)

- Anonymous_hello

war of 1812  

a. slavery

b. a depression  

c. impressment  

d. the northwest ord

the 22nd united states congress