Answer: Purify the Aryan Race and help show german superiority
Step-by-step explanation:
Hitler belived slavs were sub human and jews were leaches stealing from germany and dragging it down so he beived if he could get rid of them he would elevate germany and he also wanted to make the world german as he wanted lebinsrum which is living space for the german people but to do that he would need to increase the number of ethinic germans which is what he did in the Nazi lands and what he hoped to do to the world