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 according to the Sunnah should be selected based on ٍShura (consultation), as was done at the Saqifah which selected Abu Bakr, Muhammad's father-in-law, to be Muhammad's political but not his religious successor. Shia, on the other hand, believe that Muhammad designated his son-in-law Ali ibn Abi Talib as his true political as well as religious successor. The overwhelming majority of Muslims in the world, between 87–90%, are Sunni. Shias and other groups make up the rest, about 10–13% of overall Muslim population. The countries with the highest concentration of Shia populations are: Iran – 96%, Azerbaijan – 85%, Iraq –