Did you know how concentrated religions are geographically?

Source

While Islam is still associated with the Middle East and North Africa in the minds of many Americans, only 20% of the world’s Muslims live in the region. Egypt is the only Middle Eastern-North African country that ranks among the six largest Muslim populations (Indonesia, India, Pakistan, Bangladesh, Nigeria and Egypt). Those nations together account for 53% of the world’s 1.6 billion Muslims. Egypt is also the only country in the group where Arabic is an official language. While these six countries have a majority of all Muslims, they comprise only 30% of the world’s population.