Couple of them. The two Eids --- Eid Al Fitr, and Eid Al Adha. Othere events may or may not have a holiday but include Muharram Ashura, Eid Al Nabi, Shab e Barat.
The holidays of Islam are Eid Al-Adha and Eid Al-Fitr.
No the sacred book of Islam is called The Holy Qur'an
There are only 2 holidays in Islam: Eid Al-fitr and Eid Al-Adha
Muhammad was the founder of Islam and the proclaimer of the Qurʾān, Islam's sacred scripture.
The sacred law of Islam is the Shariah law which has been compiled with reference and guidance form the Holy Quran and Hadith
yes
yes i think that the main sacred writing of Islam allow ploygamy
The revelations from Allah were collected and formed the Quran, the sacred text of Islam.
Yes, Jerusalem one of Islam's holiest cities.
Aeed
Islam's most sacred cities of Mecca and Medinah are in the Kingdom of Saudi Arabia.
What is sacred to both are the Torah, Psalms, and the Old City of Jerusalem.