The difference between autobiography and memoir is autobiography covers the writer's entire life; memoir covers a particular time or events around a theme autobiography is written by a person about his or her life; memoir is written about the person by someone else autobiography is an oral biography; memoir is written virtually nonexistent

Autobiography covers the writer's entire life; memoir covers a particular time or events around a theme.

Explanation:

Autobiography is the written details of the author's life authored by him. It's a self written record of a person's life and not only a specific time of his life. Whereas, a memoir is also a written record of a person's life but only about a specific time and a theme alongside it. Though they are similar in their authorship and the ownership of the written works, their only difference lies in the time frame of the described work. Also, autobiography tends to be chronological whereas a memoir deals with just one aspect of the author's life.

because of all the immigration, america became one big melting pot. the diversity of cultures from all over the world made america somewhat divided as well. people that immigrated stayed with their kind, and their traditions, while native born americans stayed with their kind and their traditions. normally, people born in american scorned the immigrants as well. the new religions also divided america. in summary, it took away from the american culture and identified america as the "melting pot."