Japanese Americans are American people of Japanese heritage. Japanese Americans have historically been among the three largest Asian American communities, but in recent decades, it has become the sixth largest group at roughly 1,304,286, including those of mixed-race or mixed-ethnicity. In the 2010 census, the largest Japanese American communities were found in California with 272,528, Hawaii with 185,502, New York with 37,780, Washington with 35,008, and Illinois with 17,542. Southern California has the largest Japanese-American population in North America.
b)expulsion of Japanese immigrants