The Wilmot Proviso prevented new states from becoming slave states, the compromise enabled them to become slave states if popular sovereignty wanted them to be. California was allowed to become a new, non-slave state, and in return Slavery was enabled and allowed in the south, strengthening fugitive laws even more. To everyone it seemed like a victory for a while.
The deliberate killing of a large group of people, especially when it's from a particular ethnic group or nation.
the correct answer is the Greeks (by the time of Ancient Greece)
hope I helped !