Emigrate, Immigrate

Emigrate: to leave one country in order to live in another country. Emigrate takes the preposition from, as in He emigrated from Russia to America. It is incorrect to say, "He emigrated to America."

Immigrate: to enter a new country with the intention of living there. Immigrate takes the preposition to, as in He immigrated to America from Russia. It is incorrect to say, "He immigrated from Russia."