Japan is the only country not to become colonization by European countries in Asia. Why Japan was't colony. At Edo Period, the government has a policy that they don't trade any countries it is called national isolation. But actually they did trade with a few countries. That is not national isolation, they managed to trade. Because almost countries was colonized to be spread European's religion and unfair trade. By managed trading, Japan proceed the different way with other Asia countries. And we had gone on Sino-Jpananese War, Russo-Japanese War, Second World War and postwar huge economic growth.
It was surprised in the world that Japan won China, because Japan is too small compered China. And japan won Russia, It was first time that Asia beat caucasian country. If they was bean they would become colony by European countries, and it wouldn't occur Pacific War. in World War two, Japan occupied many Asia counties next to next. Because they was concerned about a few resource country in Japan. To fight with huge county like america, they don't have any way to invade Asia. On history Japan attacked to America, actually if they don't do that they would lost America because of no resource county.
After end of the war, Japanese policy and law was made from America. And after a long poor term, Japan had changed to richest county in the world. This economic growth is paid attention from many countries for long time.