C
He was the one who suggested this idea.
The Curtis act of 1898 was an amendment to the United States Dawes act ; it resulted in the break-up of tribal governments and communal lands in Indian territory
The philosophy of Karl Marx was not used to justify European Imperialism whereas European superiority allowed other races to be seen as sub-human, as did social Darwinism as there were theories produced to suggest the white race was genetically superior (where the term Caucasian came from).
A shortage will develop when the market price is below the equilibrium price.