Sentence B. My mother "emigrated" from China and came to the United States uses the underlined word correctly. <u>Emigrate</u> means to leave one country to settle in another, and it implies a permanent move. On the other hand, <u>immigrate</u> is to enter and settle in a foreign country. The difference between these two words is that emigrate is the act of leaving a country and immigrate the act of entering a country.
I think that the meaning is that until all people are not free we can not be free until they are free too. So like is saying that we are not leaving no one behind.
