1:Why do people move?
Some move because they are poor, they want to find a better place to live. Some people want freedom, maybe lots are slaves and want to get freed Some move because they want a better education, and go to a better school. Some people want to live a better life, live in better shelters and eat better food.
2:What do we do when other people don't think, act, or speak the same way we do?
Some people people will be afraid and not talk to them, and never bother to learn their language and culture. But others will act differently, some will go and learn their language so they can communicate. Others will either use hand motion to tell them something or exclude them.