Answer:
1.4%
Explanation:
"At the PEAK of slavery in 1860, only 1.4% of Americans owned slaves. What your history books (don't) tell you is that 3,000 blacks owned a total of 20,000 slaves the same year." My source is: https://www.politifact.com/
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President Andrew Johnson was impeached because he violated the Tenure of Office Act
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Florida had wanted to enter as a slave state, which posed a problem and ultimately led to six years of wait.