What did free states accuse slave states plotting to?

Hello  Adam Here!

Explanation:

In the United States before 1865, a slave state was a state in which the slave trade was legal, while a free state was one in which it was not. There were some enslaved persons in most free states in the 1840 census, and the Fugitive Slave Act of 1850 specifically stated that an enslaved person remained enslaved even when she or he fled to a free state.

Hope This Helps From, Adam :)

the dominoes began to fall. the surrender at appomattox took place a week later on april 9. while it was the most significant surrender to take place during the civil war, gen. robert e. lee, the confederacy's most respected commander, surrendered only his army of northern virginia to union gen. ulysses s. grant

explanation: