Islam () is an Abrahamic monotheistic religion teaching that there is only one incomparable God (Allah) and that Muhammad is the messenger of God. It is the world's second-largest religion and the fastest-growing major religion in the world, with over 1.8billion followers or 24.1% of the global population, known as Muslims. Muslims make up a majority of the population in 50 countries. Islam teaches that God is merciful, all-powerful, unique and has guided mankind through prophets, revealed scriptures and natural signs. The primary scriptures of Islam are the Quran, viewed by Muslims as the word of God, and the teachings and normative example (called the "sunnah", composed of accounts called "hadith") of Muhammad ( 5708 June 632 CE).

Muslims believe that Islam is the complete and universal version of a primordial faith that was revealed many times before through prophets including Adam, Abraham, Moses and Jesus. As for the Quran, Muslims consider it to be the unaltered and final revelation of God. Like other Abrahamic religions, Islam also teaches a final judgment with the righteous rewarded paradise and unrighteous punished in hell. Religious concepts and practices include the Five Pillars of Islam, which are obligatory acts of worship, and following Islamic law, which touches on virtually every aspect of life and society, from banking and welfare to women and the environment. The cities of Mecca, Medina and Jerusalem are home to the three holiest sites in Islam.

1. how many followers are there of Islam?
2. what do they consider the Quran?
3. which cities are home to the three holiest sites in Islam?
4. is Islam polytheistic?
5. is Islam polytheistic or monotheistic?
6. is it an Abrahamic religion?
7. how many Gods do they believe in?
8. what are the followers known as?
9. what percent of the global population do they make up?
10. how many countries do they make up the majority of the population?
11. what are the normative teachings of Islam called?
12. what is the primary scripture?
13. what are some of the other prophets that are recognized?
14. what are the accounts of the sunnah called?
15. from what time period are they?
16. how many pillars are there in Islam?
17. does it also teach about final judgement?
18. who goes to hell in that scenario?
19. who gets rewarded?
20. who is the messenger of God in Islam?

Numbered answers:
1. over 1.8billion
2. the word of God
3. Mecca, Medina and Jerusalem
4. unknown
5. monotheistic
6. yes
7. one
8. Muslims
9. 24.1%
10. 50 countries
11. the "sunnah"
12. the Quran
13. Adam, Abraham, Moses and Jesus
14. "hadith"
15. 5708 June 632 CE
16. five
17. yes
18. the unrighteous
19. the righteous
20. Muhammad