The Japanese wanted an Empire in Asia so they conquered Manchuria which was a part of China. They ended up moving the Chinese inland towards Hankow during their efforts .
What The Japanese Left Out
fuel storage tank
Due to Japan's efforts the U.S, Netherlands, and Great Britain decided to freeze their assets with Japan. This included cutting off 90% of raw materials for war production.
FDR/"Date which will live in infamy"
The Japanese weren't very happy about this since they decided to declare war on the U.S by attacking Pearl Habor. They attacked Pearl Harbor because they thought that it was their only threat. There was two waves of attacks; the first wave attacked Battleship Row and parts of the Navy Yard while the second wave damaged already hit places further.
Effect of the Attack
Though the Pacific Fleet was severely damaged the Japanese left out crucial details in the plan to attack. They didn't take out aircraft carriers, fuel storage tanks, maintenance areas, along with submarines and destroyers.
On December 8th, 1941 President Franklin D. Roosevelt made a speech about what had happened the day before. He had to announce that many lives were lost during the attack. He also famously stated that the day will live in infamy which means that that day will forever be known for a bad reason.
The Japanese ended up critically damaging the Pacific Fleet. Though they did leave out maintenance areas and such, it was still a challenge to repair the fleet. The U.S will come back for the Japanese later but after that, they needed to recover.