As a consequence of the attack on Pearl Harbor in December, 1941, which prompted the United States to enter World War II, in February, 1942, President Eisenhower issued an Executive Order that authorized not only the creation of restricted military areas but also that of concentration camps for Japanese immigrants and Japanese-American citizens. Approximately 120 000 people of all ages were imprisoned in these camps in the states of Arizona, Arkansas, California, Colorado, Idaho, Utah, andWyoming.
Although most of these camps have disappeared today, one of them located some 230 miles to the north of Los Angeles, known as Manzanar, has been preserved . These camps were continually watched by the military, from watch towers equipped with machine guns and search lights; they were surrounded with barbed wire fences, and the barracks were made of thin plywood covered with tar paper. A replica of one of the watchtowers and the barracks can be visited in the present time.
Although from the very constructoin of these camps efforts have been made to deny their existence or to disguise them as facilities to protect the interns from some horror, People who were imprisoned them for some time between May, 1942, and August, 1945 and remain alive demanded that the government mantain Manzanar and open it to the public as a historical center in order to preserve the memory of what occurred there, and hold special annual visiits in the course of whicn it is possible to pear from their own lips what happened to therm while they were prisoners. There is also photographic testimony of the life in these camps.