Why is North and South Korea separated?

Related questions

1. What is JSA Korea?
2. What is North Korea's main source of income?
3. Is there television in North Korea?
4. Is it safe to travel alone in Seoul?
5. How much does a trip to North Korea cost?
6. What is the purpose of the demilitarized zone in Korea?
7. How does the Korean DMZ work?
8. Is education free in North Korea?
9. How common is English in South Korea?
10. Is the DMZ in North or South Korea?

Tags

1. #japanese
2. #south
3. #along
4. #victim
5. #americans
6. #russians
7. #dismantled
8. #spheres
9. #installed
10. #china
11. #communist
12. #ceding
13. #later
14. #north
15. #divided
16. #influence
17. #world
18. #empire
19. #regime
20. #korea
21. #parallel
22. #controlled