When was it ok to speak of japan as a political econmic and cultural unit?

Question

When was it ok to speak of japan as a political econmic and cultural unit?
When does it start to become accurate to speak of japan (nihon) as a political, econmic and cultural unit distint from continental Asia? discuss the most important foactors that contributed to this use. explain why as you recount four key moments in the evolving relationship between the archipelago and the continent up throught the warring states period?
Please help me anwers this any way that you can. I need something so I know how i should begin. Thank you to anyone who can answer this.

Answer 1

Since its beginning. Japan has always preferred to go it alone, not even allowing visitors until the 19th century basically. Since then they have followed the same all for one mentality they've had since the first emperor. The work together in everything, including business, which often gives them a tremendous edge when competing. Their culture has always been based on the obedience of all to one authority, even when they fought amongst themselves, so for them to be a political, cultural and economic unit is the natural expression of their history. It would almost be completely out of character for them to do otherwise.