The demography of West Pakistan underwent a drastic change during partition of India: there was an influx of 4 million Muslims into Pakistan side, and more than 7 million Hindus and Sikhs were expunged from their homes, forced to cross the border into India. Many claim that there was a mass exodus from both sides, and that this was an outcome of irrational fears of both religious groups, but reality was far from irrational. Link - bit.ly/3qD18N1