What cultures that didn’t accept Islam? There’s a variety of branches of Islam. There are still minorities in Muslim nations.
Folk generally convert to curry favour. Obama’s grandfather did so at least three times. The Khazars did so frequently to gain allies. They were Jewish at least twice and ended up as Muslims to gain Allies against the Byzantines.
The English were Catholics one day, Protestants the next curtesy of Henry VIII.
Jews and Christians were known for forced conversions.
You have no point!
And Sharia exists in Saudi Arabia, possibly Afghanistan. The rest use a mix of civil and Sharia like we use a mix of civil and Biblical. The latter is as obnoxious as Sharia on its own.
You have no point!