The answer to your question is rubble
African Americans protested in the streets against discrimination.
His political philosophies form its foundation
John Locke was a very famous Enlightenment philosopher featuring a plethora of individualism in both his concepts and beliefs.
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B. Cultural practiced of language and religion changed.
Assuming this is in regards to the Aryans and the Indus Valley civilizations. Aryans introduced early Hindu ideas and writings, as well as developed the earliest forms of Sanskrit.