It took the Christian church about 1500 years.
Since you've weighed in, tell me this: Until now, why has there never been a Muslim democracy? And don't say anything about Turkey. I'm talking about a republican form of government, which protects human rights and due process/the rule of law.
What's been stopping them?
(hint: respect for human rights and the rule of law are incompatible with Islam. Go ahead. Say it. You can do it.)