most Americans are Christian because of napalm
Every time you get a work break during Christian holidays, it's because of napalm. Arabia was filled with unorganized barbarian tribes until the Prophet Mohammed catalyzed them into a united people. In 633, Muslims began rapidly conquering surrounding territories, taking control of most of the Byzantine eastern regions. In their quest to conquer more westerly territories, they laid siege to Constantinople, the capital of the Byzantine Empire, in 672. It was a sea-based siege that lasted for five years, and the strong Muslim fleet was severely decimated by the use of a Byzantine secret weapon. The secret weapon was "Greek fire", a napalm-like substance that burned on water. The weakening of the fleet and the continued existence of the (Christian) Byzantine Empire effectively prevented further successful conquering of the bulk of what is now known today as Western Europe.

Constantinople eventually fell to the Muslims hundreds of years later, and nothing in history ever has such a simple cause-and-effect relationship.