What are some social reasons why people migrate?

People don't like the cold weather. they might move because they are illegal or for education. they might move to see a sport game. some people move to get a job or run a buisness. People migrate if they have injurys they need better medication. they can also move if there is a war or if they want to explore or vote.

My answer is: Some of the reasons are people cannot but land or find work. Or changes in the goverment may force people to leave.