At what point did the United States become involved in World War II?
a. when Germany invaded Poland
b. after the Japanese Americans were placed in internment camps
c. after Japan attacked Pearl Harbor
d. before Archduke Ferdinand was assassinated

Respuesta :

The United States became involved in World War II only "c. after Japan attacked Pearl Harbor," since this represented an unquestionable act of war against the US that needed to be avenged. 
 After Japan attacked Pearl Harbor, the United States became involved in World War ll. 

Answer: c. after Japan attacked Pearl Harbor