 The Japanese population in the United States grew from 148 in 1880 (mostly students) to 2,039 in 1890 and 24,326 by 1900.In 1907, the Gentlemen's Agreement between the governments of Japan and the United States ended immigration of Japanese unskilled workers, but permitted the immigration of businessmen, students and spouses of Japanese immigrants already in the US.Prior to the Gentlemen's Agreement, about seven out of eight ethnic Japanese in the continental United States were men.