France is a bastard country. It's made of barbarians gauls, roman invaders, and germanic invaders. The "father" of the French nation, Clovis, was a migrant.
Basically, it was like if, one day, a somali immigrant form a powerful gang of durkas, invade the country, then decide that french History was cool so he converts to Christiannity and declare himself Emperor Mamadou the First.