Why did slaves support the movement to end plantation slavery?

Because everyone have rights, even slaves have. They are Socially equal people too. Tey have RIGHTS like others.

b.europe i believe because north america has 3 countries in a way and with all the stuff with illegal immagrants from mexico or whatever so i would say europe.

the story goes that because of this belief, constantine was able to defeat his foes. constantine became an ardent1 christian. christianity and other religions were tolerated under constantine's rule. constantine also was responsible for the building of a great cathedral in rome.