Final answer:
The events related to the unfair treatment of Japanese Americans can be put in the following order: Attack on Pearl Harbor, United States entered World War II, Roosevelt signed Executive Order 9066, Korematsu v. United States was decided
Step-by-step explanation:
The events related to the unfair treatment of Japanese Americans can be put in the following order:
- Attack on Pearl Harbor: On December 7, 1941, Japanese armed forces attacked the US naval base at Pearl Harbor.
- United States entered World War II: The next day, President Roosevelt asked Congress to declare war, and on December 8, 1941, the US entered World War II.
- Roosevelt signed Executive Order 9066: Two months later, on February 19, 1942, President Roosevelt signed Executive Order 9066, which authorized the forced internment of Japanese Americans.
- Korematsu v. United States was decided: On December 18, 1944, the Supreme Court decided the case of Korematsu v. United States, upholding the constitutionality of the internment.