It was preceded by delivery of the Hull note, and more than half the casualties occurred when the USS (*) Arizona exploded.
This event was catalyzed by the Vinson-Walsh Act and followed up by the 14-Part Message It was preceded by delivery of the Hull note, and more than half the casualties occurred when the USS (*) Arizona exploded. An undelivered third strike would have destroyed most of the base's infrastructure, delaying U.S. naval action in the Pacific Theater for more than a year, but that idea was nixed by Admiral Yamamoto. For ten points, name this event occurring on December 7th, 1941, a surprise attack by the Japanese on a Hawaiian naval base, which led to America's entry into World War II.
This event was catalyzed by the Vinson-Walsh Act and followed up by the 14-Part Message
Attack on {Pearl Harbor} (accept {Operation Z} or {Operation Hawaii} or {Operation AI})