Ok yeah no lol shgsbdjdvbrjr
Scientific theories said that dark-skinned people were less intelligent than white people and misguided theories justified the passage of laws that kept African Americans from voting.
The Atlantic slave trade, transatlantic slave trade, involved the transportation by slave traders of various enslaved African people mainly to the Americas.
This of course depends entirely on the person in question, but generally speaking people who believe in such things would want to come back as animals somewhere at the "top" of the food chain.
In 1887, Congress established a commission to regulate the railroads by passing "The Interstate Commerce Act", which was mainly intended to keep railroad companies from becoming monopolies.