The Great Wall is a fortificated East-to-West line which historically has delimited the Chinese Northern border. Its primary purpouse was to defend the Chinese territory against the invasions and quick raids organized by the nomadic people from the Eurasian Steppe lands, located more to the North.
But rather than as a fixed border, it should be regarded as a transition zone which establishes a distinction between two different lifestyles, even nowadays: the farmer regions in the South with sedentary ways of life and the pasture lands in the North, where its inhabitants have nomadic lifestyles and work mainly in animal husbandry activities.
The archaeologists and historians criticized the building of the Three Georges Dam because it flooded and destroyed a large number of important cultural and archaeological sites. The dam has caused a lot of ecological changes and approximately 1.3 million people had to move because of the creation of this dam.
Commerce and Slave Trade Compromise is the answer
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Due to this over 7 million Palestinian refugees do not have a home due to the European colonialism.