Iran, Syria among Muslim-majority nations in the world

In the wake of President Trump's travel ban on refugees and citizens from six Muslim-majority nations, conversations and questions have emerged on the ancient global religion of Islam and its place modern culture.

According to Pew Research Center, an estimated 1.6 billion people are practicing Muslims around the world -- making Islam the world's second most popular religion. As of 2010, Christianity maintained its position as the most popular religion with an estimated 2.17 billion Christians scattered around the globe.

While each of the countries listed in Trump's revised travel ban (Syria, Yemen, Iran, Sudan, Somalia and Libya) are Muslim-majority nations, only Iran makes the list of top 10 countries with highest Muslim populations in the world.

Click through to see every Muslim-majority nation in the world: