How was Korea divided after WW2 ended? Why did it split in two?

Well, Korea was divided into two parts North Korea and South Korea. This happened after the Korean War, or the Forgotten War, which was happening while WW2 was happening. This war began in June 25 1950 and ended in July 27 1953. Why this happened is because 75,000 soldiers of the North Korea army invaded South Korea.

Explanation:

I don't know if this is the right answer, tell me if it is wrong, and please don't go too hard on me if it is, I'm new to and started answering questions today. I'm just writing and telling you what I remember from my lesson in Korea. Yes I'm from South Korea, but I'm now living in America and was for a long time so I think i forgot lots of the lesson i learned about Korean history.

Sorry if it is wrong. I hope this help though.

since most of current immigration into the u.s., both legal and illegal, is coming from latin america. it would be very difficult to imagine or rationalize a country my fellow citizens are trying desperately to flee into, would pose a threat to my prosperity or freedom. since the u.s. has a long history of intervention, but no record of permanent occupation, i would not feel oppression is the main objective.  

the largest free trade nation, along with the largest gdp in the world wanting to expand it's economic policy on us, and including us, could only be positive. the u.s. government has no interest in, or way of simply forcing american culture on us. and has no track record of it. other nations that adopted american social culture, or "americanization" did so voluntarily, mainly through the choice of allowing american businesses and u.s. citizens to come into their nations, as free operatives.