Literate people
contribution of your work to the world
discovering new thing
inventing new things etc can develop a developed country
For about six months there is no insolation on the north pole due to its position on the Earth and the Earth's position itself. When the Earth is in the December solstice, the earth is rotating around on a relatively higher plane. This phenomenon leads to the insolation of the north pole from approximately three months before and three months after the December solstice because it is too high far to receive the sun's rays.
According to modernization theories, endogenous factors in the countries, such as traditional, illiteracy, the traditional attitude of the population, agrarian structure, the low division of labour, the lack of communication and infrastructure, etc., are answerable for underdevelopment.