Answer:
The correct answer is A. The partition of British India in 1947 affected the religious population of South Asia by creating Muslim majorities in what is not Pakistan and Bangladesh.
Explanation:
The partition of India refers to the division of British India into two independent states, Pakistan and India, on August 15th, 1947, in connection with the withdrawal of Britain from their former colony.
The boundaries of the two new countries were set by the United Kingdom, which meant that the new country of Pakistan was given two parts, East and West Pakistan, which were on either side of the "new" India. The division according to the Mountbatten Plan sought to take into account the cultural and religious differences among the people of India.
Up to the split, considerable tensions between Hindus and Muslims were triggered, and the split led to widespread unrest and large flows of refugees between the new states. It is estimated that up to half a million people died as a result of the unrest and that around 15 million people either moved or fled. The majority of those killed perished in Punjab, where events have been compared to genocide.
The border crossing itself has later led to several wars between India and Pakistan, especially due to Kashmir province, despite a Muslim majority becoming part of India. In 1971, East and West Pakistan were also divided into Bangladesh and present-day Pakistan following a bloody civil war.