The Rub' al Khali or Empty Quarter is a desert in Saudi Arabia. It is one of the largest sand deserts in the world. It covers an area of about 650,000 square kilometres, more than all of Holland, Belgium and France together. Some of the sand dunes are more than 250 metres high.
In the people's republic of china "a new set of social classes is gradually emerging".
Social stratification is a sort of social separation whereby a society gatherings individual into financial strata, in light of their occupation and pay, riches and economic wellbeing, or inferred influence. A few social orders are more open in such manner, while some are more shut. The significant frameworks of stratification are slavery, estate systems, caste systems, and class systems.
Answer:
Since the past times, there has been one or more ways to divide individuals on the basis of religion, color or gender etc. and justify the inequalities among them without any proper scientific or social reasons.
When the different individuals from different basis come together the politics based on such inequality got thrashed down .
Many political and religious powers throughout the US consider such alliances dangerous as their whole politics and agenda are based on such divide and rule policies.
Prehistoric human migration was mainly driven by human wanderlust and population pressures but relied critically on the habitability of available land. We have modelled such prehistoric population dynamics using a diffusion equation whose numerical solution is tempered by accurate geological data for the Indian subcontinent taken from satellite databases.
