What caused the division between people in South Asia?

Given its large size, Asia has been subdivided on the basis of many factors including cultural, political, etc. Physiographically, there are five major regions of Asia. These are Central Asia, East Asia, South Asia, Southeast Asia, and Western Asia.

Explanation:

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"harry t. moore (1905-1951) – civil rights activist, leader, and the first martyr of the civil rights movement. fannie lou hamer (1917–1977) – leader in the american civil rights movement; co-founder of the national women's political caucus and freedom democratic party. james farmer (1920–1999) – congress of racial equality."

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