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North China Invasion
Japan invades North China from Manchuria -
U.S. Ceases Trade
The U.s. imposes and ends trade sanctions, hoping to curb Japan's agression in Asia. -
Possible Attack
Adm. Yamamoto communicates with other Japanese military officers about a possible attack on Pearl Harbor. -
Attack Warning
Joseph C. Grew, U.S. ambassador to Japan, warns Washington about the surprise attack on Pearl Harbor. However, no one in Washington believes him. -
Message Monitoring
U.S. intellegence officers monitor Japanese secret messages. -
The Code Cracked
Japanese Adm. Nomura informs his superiors that the U.S. was reading and breaking the secret Japanese code. No one in Tokyo believes him and the code remains unchanged. -
Attack Training
Adm. Yamamoto trains his forces and finalizes the attack on Pearl Harbor. -
Possible Negotiations
Japan attempts to get the U.S. to agree to its expansion of Asia diplomatically. However, if unsuccessful, Japan is ready to go to war. -
Submarine Departure
Submarines depart from Japan to Hawaii. -
Aircraft Departure
Aircraft carriers and escorts begin the attack on Hawaii and leave Japan. -
The Bombing
The Japanese launch 350 planes and 6 aircraft carriers on Pearl Harbor. The attack lasts for 2 hours and 20 minutes. -
War on Japan
The U.S. Congress officialy declares war on Japan.