During World War II, which ethnic group was imprisoned in a process called "internment"? Japanese Americans German Americans Chinese Americans

Answer is Japanese Americans.

Japanese internment camps were established during World War II by President Franklin Roosevelt through his Executive Order 9066. From 1942 to 1945, it was the policy of the U. S. government that people of Japanese descent would be interred in isolated camps. Enacted in reaction to Pearl Harbor and the ensuing war, the Japanese internment camps are now considered one of the most atrocious violations of American civil rights in the 20th century.

Japanese Americans under the Executive Order 9066 on February 19 1942 signed by FDR himself.