By numbers .. The fastest growing religion .. These shifts the proportions of Muslims and all religions

According to data published by the World Economic Forum 2019, Christianity dominates the Americas, Europe and the southern half of Africa, while Islam is the most widespread religion in a series of countries stretching from North Africa across the Middle East to Indonesia.

India stands out as a huge Hindu bloc, while Buddhism spreads in Southeast Asia and Japan, and China emerges as the country with the largest number of "atheists."

Yet the numbers do not say everything. For example, the United States seems almost a Christian country, but the numbers of atheists and non-believers in its population are much higher than in other countries.

Christianity remains the largest ideological system in most European countries, but atheism is very strong in many places, especially in Western Europe, especially in the Czech Republic, where it is close to half the population.

The fastest growing debt
A 2017 study reveals that Islam is the fastest growing religion in the world. The 2050 religious forecast by the Pew Research Center suggests that the number of Muslims in the world is expected to grow faster than the Christian population because of their young age and high fertility rate. Religious change has a significant impact on the Muslim population, the survey shows.

Although Islam began in Arabia, by 2002 80% of Muslims lived outside the Arab world.

The Vatican Statistical Yearbook 2008 revealed that for the first time Muslims outnumbered Catholics globally, however, the CSIS report argued that some expectations of the Muslim population were exaggerated, because they assume that all offspring Muslims will necessarily become Muslims even in mixed parenting situations.

In 2010, Asia was home to 62% of the world's Muslims, while 20% lived in the Middle East and North Africa, 16% in sub-Saharan Africa and 2% in Europe.

By 2050, Asia will comprise 52.8% of the world's Muslims, about 24.3% of Muslims will live in sub-Saharan Africa, 20% in the Middle East and North Africa, and 2% in Europe, according to the Pew Research Center.

However, the numbers do not say everything. There are many details about who adheres to the teachings of religion and those who do not. This means that studying and growing religions requires more effort than maps and figures can provide.