Beginning in May 1942, the War Department transferred the Japanese Americans to 10 War Relocation Authority (WRA) relocation centers: Central Utah (Utah), Colorado River (Arizona), Gila River (Arizona), Granada (Colorado), Heart Mountain (Wyoming), Jerome (Arkansas), Manzanar (California), Minidoka (Idaho), Rohwer (Arkansas), and Tule Lake (California). Under guard and surrounded by barbed-wire fences, the internees lived in cramped barracks sharing communal toilets, showers, and mess halls. Privacy was nonexistent. The relocation centers mirrored small communities with churches, hospitals, libraries, post offices, and schools. The WRA allowed some internees to leave for temporary seasonal agricultural work. Others attended college, served in the military, or obtained outside employment. Some of the internees remained in the WRA relocation centers until they closed in 1946.

a. The war department relocated Japanese Americans to one central location.
b. The WRA allowed some people to leave.
c. Japanese Americans were relocated to several areas where small neighborhoods were established.
d. Some internees remained there for 4 years.

The main point of this text is that Japanese Americans were relocated to various locations during the Second World War and in these locations, small neighborhoods sprang up as the people tried to make sense of their new surrounding.

The Japanese Americans were treated this way because the U.S. was at war with Japan at the time and did not trust the Japanese Americans not to somehow leak information to the Japanese Empire.