The correct answer is North Korea
North Korea has an extremely closed and centralized economy, as its economic system falls within the socialist model. The economy is fully controlled by the government. The industrial sector is not very efficient due mainly to low investments and lack of competition. The country also faces serious problems in the agricultural sector, finding shortages of different types of food. The country's infrastructure is poorly developed, as it also does not have investments. As wages are controlled in the country, a large part of the population has a low income (by the standards of developed capitalist countries) and similar. Therefore, there are no significant economic inequalities in the population. The North Korean government allocates a large part of the funds raised for military investments. The country has little commercial contact with other nations, as it is not inserted in the globalized market.
