The Most Common Religion in Every Country

The religion that dominates a country isn't random — it's a map of history: of ancient trade routes, empires, migrations, and the movement of millions of people over centuries. In this video we break down the most common religion in 15 of the world's most recognizable countries, and the fascinating history behind each one. You'll find out why the country with the most Muslims on Earth isn't in the Middle East, why the largest Catholic nation isn't in Europe, how Britain became one of the most secular countries in the West, and why Nigeria is split almost perfectly between two of the world's great faiths. We travel through the USA, Brazil, Mexico, Italy, Russia, the UK, India, Indonesia, Saudi Arabia, Turkey, Israel, Japan, China, Thailand, and Nigeria — one country at a time. 🌍 What's the most common religion where YOU live? Tell me in the comments — I read every single one. 👉 Subscribe for a new country breakdown every single week.