How did the number of states in the union change between 1790 - 1850?

What person was influential and trying to ease race relations in america during the early part of the twentieth century

I’m learning abt the manifest destiny and i don’t know who the people are in the picture can someone tell me who is on the left hand side, right hand side, the women in the center? ?

Which of the following laws would the free soil party have supported?