North Korea was influenced by the ideology of the Soviet Union which is communism. They have a planned economy and everything they have is basically owned by the government. The government also controls their economy activity. North Korea is being ruled by one family only. Their first leader Kim II-sung led North Korea for about 46 years until his death, which was then replaced by his son. His son, Kim Jong-il was the one who took over North Korea, again until his death which was then replaced by Kim Jong-un. North Korea is isolated from international trade or investment. They only have international trade or investments with the Soviet Union and China. Their lack of international trade and investment might be the cause of their really poor economy. This is because if they open up for international trade, and joint ventures with other countries, they will gain more profit. However, it is also caused by their military first policy where most of their money is used for military production. Once they tried to catch up with South Korea by making mega-projects for their people such as stadiums, thinking it would help their economy. However, it only made it worst because their people was not able to afford to pay.