From the documentary "Islam: The Untold Story" which is officially banned in the land of the 1st Amendment and a lot of other countries.
Related: Dan Gibson - Trailer for The Sacred City.
Video Title: HISTORY - The Rise of Islam - Tom Holland. Source: Hay Levels. Date Published: September 30, 2015. Description:
How did Islam become one of the most powerful religions in the world?
Video Title: HISTORY - The First Crusade - Thomas Asbridge. Source: Hay Levels. Date Published: January 4, 2016. Description:
What were the factors that contributed to the first crusades success?