Japan has no recorded history until 600AD. At that time an Empress Suiko introduced the concept of recorded history to Japan. Empress Suiko was actually a Korean princess who's name was not Suiko. Suiko actually means the keeper of history, since she brought the practice of keeping history to the Japanese.

Prior to 600 AD, Japan was controlled as a barbarian province of China. The Chinese didn't have much interest in what happened in Japan because Japan was so inconsequential. When there were problems in Japan with succession, the Chinese would decide who ran things such as in the case of the Yamamoto royal house.

Japan in ancient asia was the backwaters of the world - uncivilized and dangerous. India and China were the great powers, the great innovators who had created writing, paper and complicated religions. Japan was an uncivilized backwater composed of various small time tribes who bickered and killed each other all the time. They had no concept of history, their basic religion was as symbol as Shintoism - the worship of rivers and mountains, they had no technology.

The Japanese always practiced slavery. People who stole where taken as slaves if they did not have money to pay for the goods they stole, which quickly creates a slave class. The Japanese land was rare in precious stones or jade so they had little wealth. Slavery became the defined currency of wealth. Slaves were given to China repeatedly as a sign of loyatly to the Chinese empire and desire to stay in their good graces.

Historically the Japanese were all tattooed. Men of important status had 5 or so wives while lesser men had 2 or 3 wives. They worshipped the Mountains, the rivers, the sea and the sun. They had no written language and only learned of written language when the Chinese Buddhists brought buddhism to China.

Before the Japanese were taken over by the Korean/Chinese and made into a real country, they were controlled by an evil witch named Pimiko during 200 AD. Pimiko refused to deal with any men and made her brother do her business with the men of Japan. She was a sorcerer and witch and concentrated her powers on controlling the people of Japan. She lived in a fortress and never came out. Her rule was stern and many people died. This tradition of Japanese women controling their men and the Japanese reverence for witches continues to this day.

What gave birth to Japan as a country was actually the great wall in China constructed in 200 BC. The great wall became a point of referene for migrants in ancient Asia. You could travel either west along the wall or you could travel east along the wall. If you travelled east, toward the ocean, you came to Korea. If you wanted to go further the next stop was Japan - the archipelogo off of Korea's shore. So Japan and Korea are by nature mut countries that were created out of collections of Asian migrants that amassed over 100s of years of immigration. The people of Korea and Japan are composed of various DNA from all over Asia.

The dispossed and adventurous in Asia would often end up in Korea or Japan. They were the vagabounds and the explorers, much like the people who came to America in the modern world. Japan and Korea were considered the same country in ancient Asia. Even though the water separated them, the people were considered one people.

In 500 AD a Chinese element in Korea took control from the other elements and pushed out the other groups and called them Japanese and created the distinction between Japan and Korea. 600 AD, a couple of generations later, Empress Suiko was installed in Japan by these Koreans to rule Japan with a more Chinese influence. At this time history was first introduced to the Japanese.

So Japan as a modern country has only really existed for 1600 years and it was begun as a Chinese/Korean country. The Japanese are extremely young in world history, maybe that's why they're so blind to historical reality.