What are the states that had both a substantial slave population in 1860 and a large african american population in 1990

Explanation:

New York had the most large slave population, around 20,000. The second one was New Jersey with 12,000.

Also in 1990, the city with most population of Black people was New York with around 2,103 (thousands), this means that african-american represented more that 50% of the population of this state, which is amazing.

a

"the land of the dead"

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