Final answer:
After Pearl Harbor, the US government imposed various measures against Japanese Americans due to fear of espionage. Executive Order 9066 led to their internment in unsanitary and overcrowded camps. It was in 1988 when the government acknowledged the mistake and issued an apology.
Step-by-step explanation:
In the immediate aftermath of the Pearl Harbor bombing, the US government took several actions against Japanese immigrants and Japanese American citizens, including searching their homes, confiscating their belongings, detaining community leaders without trial, and imposing curfews, which is represented by the answer: D) all of these. Subsequently, President Roosevelt issued Executive Order 9066 on February 19th, 1942, which led to the authorization of the removal of any suspected enemies from designated military areas as per the answer: D) authorized the removal of any suspected enemies from designated military areas.
During their incarceration, over 120,000 Japanese-Americans were held in camps that were hastily built, overcrowded, and unsanitary, aligning with the answer: C) hastily built prisons that were overcrowded and unsanitary.
The U.S. Government officially acknowledged that the wartime incarceration was the result of racism, hysteria, and failed political leadership and issued a formal apology to Japanese Americans in the year A) 1988.
The severe reaction by the United States government towards its own citizens was primarily driven by wartime fear and prejudice. Wartime can significantly alter perceptions of right and wrong, often leading to extreme measures being justified under the pretext of national security.