What can you tell me about the Economy in North Korea 
 Most of North Korea has mountains that go skyward to 2000 feet. Occupied by Japan after WW2 the country became divided between North and South Korea. North Korea chose backing by the Soviet Union. A war between North and South Korea began that has a cease fire in 1953 and has simmered ever since. 
 how did the separation of the country affect the economy 
 Backing by the Soviet Union lead to connecting with the Trans-Siberian Railway through the town of Rajin. The country has a space program but many other countries believe it is a front for a militarized ballistic program as reported by Japan and South Korea. The separation forced N. Korea to be friendly with Soviets and China to survive but it did not ally with them. It has had its main trading partners collapsed and it became isolated for a time. It went from the ideas of communism to nationalism to be self reliant 
 you mentioned mountains earlier is the whole county mountainous, what the Geography like there 
 Most all of N. Korea is mountainous. It has prominent ranges named Hamgyong Range in the northeast and Rangrim Mountains. in its northern central region. Another feature is it has shore lines on the Yellow Sea and a Korean Bay. 
 are there any other special Geographic sites to see 
 At the present time geography accessible is in the general range with no specific information on more specific features. Economically it created a Kaesong Industrial Region as a special zone where 100 S. Korean companies centralized then hired N. Koreans as employees. 
 Interesting. Can you tell me something unique about N. Korea 
 A joint Chinese-Korean project developed called the SEZ system which once overhauled became 14 new zones. It created a Rason Special Economic Zone. Also in that same era of 2013 and 2014 a high speed railway that connected the Kaesong to Pyongyang the capital to Sinuiju was approved. It is projected to go 200 km per hour. 
 very interesting...thank you 
 It is my pleasure to give factual information that may prove useful.
North Korea