What is Chuseok in South Korea?

It would be absolutely wonderful if North and South Korea could be united as one country. South Korea is prosperous, and so are it's people, because they are open minded and willing to trade with the rest of the world. North Korea is a sad place to live. It's people are subjugated and ruled by a man who is extremely well educated and weathly. He knows how the world works, and yet he keeps his people in the dark. He's fat, but his people starve, and they're all thin. Anyone who questions him is put to death.His people starve, but he can test nuclear weapons. Sorry! This man is an insult to humanity.