If you mean "accepted," then your premise is incorrect.
Christianity was largely a Meditteranean religion for the first 1000 years of its existence. In other words, it was unheard of or rejected by 90% of the world's population until around 1100 AD when the Catholic church began violently imposing its religion around the ancient world.
Through their campaign of terrorism and lies, they spread christianity for the next 1000 years and they've been able to deceive about 33% of the world.
I never came to a conclusion that christianity is wrong, I just never believed and never will. I prefer not to follow a Jewish cult religion that has a history of murder and deception.
Yeah, we've already established the fact that I'm not having a good spelling day. :)
Your interpretation of history, though, is a little...unusual.
Even accepting what you said, nowhere did Christ say that "thou shalt oppress the unbeliever." We aren't the Space Marines, after all. Just because some tyrants did so and used Christ as an excuse doesn't invalidate what He said. Is it Buddha's fault that medieval Japanese monks burned down each other's monasteries over trivial doctrinal disputes? The historical injustices of the past are clearly against what the son of God taught us. Feel free to condemn the perpetrators, but don't put it on His doorstep
Moreover, you say that Christians are "deceiving the world." How is that? If you have some exclusive pipeline to the truth, please, fill us in. It wouldn't be the first time FR has broken important news. :D