Muslims ruled Spain for about 800 years. The Muslims in Spain never used the sword to force the people to convert. Later the Christian Crusaders came to Spain and wiped out the Muslims. There was not a single Muslim in Spain who could openly give the adhan, that is the call for prayers.
5. 14 million Arabs are Coptic Christians.
Muslims were the lords of Arabia for 1400 years. For a few years the British ruled, and for a few years the French ruled. Overall, the Muslims ruled Arabia for 1400 years. Yet today, there are 14 million Arabs who are Coptic Christians i.e. Christians since generations. If the Muslims had used the sword there would not have been a single Arab who would have remained a Christian.
