Attempting to kill off a group of people is known by which of the following terms

Which thirteenth century group invaded russia, leveling cities and massacring whole populations?

Compare and contrast the treatment of different religions by rulers of the arab empire as soon as you can with i've been working on this test for like an hour and a half and i'm super stressed : (

States' compliance with the native american reservation treaties drawn up by the federal government for the native american nations is: