Christianity by country to exceed 3 billion. Many charismatic movements are growing in Africa, Latin America, Muslim world, and Asia. Other religions: General: Christianity by country Christianity is the predominant religion in Europe, Russia, North America, South America, the Philippines, East Timor, Southern Africa, Central Africa, East Africa, and Oceania. There are also large Christian communities in other parts of the world, such as Indonesia, Central Asia, and the Middle East, where Christianity is the second-largest religion after Islam. The United States has the largest Christian population in the world, followed by Brazil and Mexico. Christianity in multiple forms is the state religion
Muslim world Muslim world The terms Muslim world and Islamic world commonly refer to the unified Islamic community (Ummah), consisting of all those who adhere to the religion of Islam, or to societies where Islam is practiced. In a modern geopolitical sense, these terms refer to countries where Islam is widespread, although there are no agreed criteria for inclusion. Some scholars and commentators have criticised the term "Muslim/Islamic world" and its derivative terms "Muslim/Islamic country" as "simplistic" and "binary", since no state has a religiously homogeneous population (e.g. Egypt's citizens are c. 10% Christian), and in absolute numbers, there are sometimes fewer