Answer:
One of the little-known pages in World War II history is about racial prejudice suffered by Americans of Japanese descent. This prejudice has been on the rise in the United States since the 1900s, but following the attack on Pearl Harbor's naval base, war hysteria has led to the detention of more than 100,000 citizens in different internment camps.
The camps built for the imprisonment of these people during World War II were called by the Americans internment camps, which, in free translation, means "internment camps." However, the most recurrent term for these places is “concentration camp”.
Shortly before the attack on Pearl Habor, an investigation led by American intelligence had been conducted by order of President Franklin Delano Roosevelt. In this investigation, it was intended to know the level of loyalty of the American population of Japanese descent. The study concluded that there was no collaboration with the enemy among citizens of Japanese origin.
However, even with evidence that there was no internal collaborationism, driven by wartime hysteria, the US government chose to take more forceful action against the Japanese-American population, seen at that time as an internal enemy. Thus, on February 19, 1942, Executive Order 9066 was enacted allowing the detention of Americans of Japanese origin in internment camps.
