Arabs, and to a lesser extent, Turks, tolerated Christianity and Judaism, although they followed Islam. The Mongols, initially Buddhist, were aligned with Christianity against Islam, but later many adopted Islam and subsequently persecuted Christians.
no persia did not conquer europe
europe
Vikings
The Romans.
Hitler tried to conquer everything. So yes.
Vikings
Northern Europe.
most of europe
Northern Europe.
The barbarian tribes threatened Europe. The word "barbarian " is Greek for the "other".
By Doing Your Mom.
Napléon did not wish to conquer Europe. His only wish was to defend the French Republic against the royalists of Europe. In his quest, he established an empire, although his goal was not to conquer all of Europe.