By the end of 1942, more than 120,000 men, women, and children of Japanese ancestry had been uprooted from their homes. Their final destinations would be one of 10 camps — "instant cities" — constructed by the War Relocation Authority in seven states. Deeply isolated from the rest of America, these "evacuees" — 65 percent of whom were American citizens — would spend up to four years imprisoned, working to rebuild their lives.