Answer:
Nations
Explanation:
Global stratification in the world mostly caused by the difference in technological development that each nations possess. The more advanced the technology you have, the higher the production amount and resources distribution that exist in a nation.
But this disparity in technological advancement caused can be tied historical conflicts in the past.
For example,
On average, nations in African continent tend to be less technology advanced compared to European nations. But in the past, the European nations have been known to colonize the countries in this continent. At that time, many Africans were forced to work for the colony without ability to pursue education or being paid fairly. This led to a massive stunt of human resource's growth in Africa.
