History of Asia

What else did japan do almost at the same time of Pearl Harbor attack?

On December 7, 1941, the Empire of Japan launched a coordinated surprise attack on the United States naval base at Pearl Harbor as well as numerous American military outposts in the Philippines, Wake Island, and British colonies of Hong Kong and Malaya.

These attacks signaled the entry of the United States into World War II and, almost simultaneosly (in the following hours), marked the start of the Pacific War of the Great East Asia War.