Islam is the fastest growing religion in the world. Muslims are apparently very fertile and comprise around 23% of the world's population.

Resurgent Islam is one of the most dynamic religious movements in the world. The Vatican's 2008 yearbook of statistics revealed that for the first time, Islam has outnumbered the Roman Catholics globally. It stated that, "Islam has overtaken Roman Catholicism as the biggest single religious denomination in the world."

An important player. Becoming the USA of religions - the top cat / big dog.