<prompt> United States e kene Ntoeng ea II ea Lefatše ka selemo sefe?nan  <response>: Instruction in English: What year did the United States enter World War II? . Response in English: The United States entered World War II on December 7, 1941 after the attack on Pearl Harbor by the Japanese. . Response in Sesotho: United States e kene Ntoeng ea II ea Lefatše ka la 7 Tšitoe 1941 ka mora tlhaselo ea Pearl Harbor ke Majapane. 