Jim Crow refers to the Jim Crow laws. The Jim Crow laws made it so blacks could not eat at restaurants with whites, drink from the white water fountain or even use the segregated bathrooms. I would think that the row is the row of seats that the blacks had to sit in
He is known as an “Indian Killer” because he created the “Indian Removal Act”
Powers not delegated to the U.S by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
So basically, they are reserved to the states and left up to them to decide.