There are actually six major religions in North Korea. The percentages of the 23,301,725 population that believe in the following religions are:
71.2% Atheist
12.9% Cheondoism
12.3% North Korean Shamanism
2.1% Christianity
1.5% Buddhist
0.0001% minghiusm
I'm not a mathematician so I couldn't narrow it down to the top three. But Hinduism is not a major or even minority religion in North Korea.
Given the political situation of the country, there is no way of knowing for sure. As religious freedom is one of many freedoms that the North Koreans do not have, the question cannot really be answered. Effectively, religion is not allowed in North Korea, even though the government there say it is and have made Propaganda films showing faith ceremonies. This is, sadly, in the same sense that the country is a democracy, even though it only has one party (its official name translates as "The People's Democratic Republic of Korea" or DPRK for short)
The best you can have to an answer is that 100% of the country is atheist*, as there is no other choice.
*The asterisk is represents the fact that the "Dear Leader" or "Eternal President" (Kim Il-Sung, Kim Jong Il, etc.) is revered and prayed to as if he were a god, but since the North Koreans do not use the term "god", they are considered to be atheists.
Buddhism.
Seoul is not a major city in North Korea, it is in South Korea. An important major city in North Korea would be Pyongyang.
The major political party in North Korea is The Supreme Peoples Assembly.
The major events are Asia and North Carolina
Amnok_River
The major mountains in North Korea include Mount Paektu, Mount Kumgang, and Mount Myohyang. Mount Paektu is the highest peak on the Korean Peninsula and holds significant cultural and historical importance in Korean folklore.
The Korean Civil War is a major event where North Korea and South Korea battled. In the end North Korea won. The United States helped South Korea while China helped North Korea
84% to 96% are Shinto and Buddhists
I'm not sure about North Korea, but Buddhism is a major religion in South Korea. South Korea is also very Christian.
North Korea is a Low Developed country and has been said to have major economic crisis.
One major challenge pertaining to the reunification of North and South Korea would be the mass unemployment and poverty of those in the North. That would impact the economy of South Korea in a major way.
hills and mountains