What are the top 3 reasons for immigration?

People may choose to immigrate for a variety of reasons, such as employment opportunities, to escape a violent conflict, environmental factors, educational purposes, or to reunite with family.

https://www.nationalgeographic.org/topics/resource-library-united-states-immigration/#:~:text=People%20may%20choose%20to%20immigrate,or%20to%20reunite%20with%20family.