Why were Northerners upset about the Dred Scott decision? It upheld the Missouri Compromise.
It said that slavery could become legal everywhere.
It stated that only Congress could ban slavery.
It reinforced the Fugitive Slave Act.

two months after his defeat of napoleon bonaparte's colonial forces, jean-jacques dessalines proclaims the independence of saint-domingue, renaming it haiti after its original arawak name. in 1791, a slave revolt erupted on the french colony, and toussaint-louverture, a former slave, took control of the rebels.

a.that is my answer.

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