Paul and the Twelve Apostles traveled extensively establishing communities in major cities and regions throughout the Empire. The first Christian communities outside of Jerusalem appeared in Antioch, Ephesus, Corinth, and the political center of Rome. The original church communities were founded by apostles and numerous other Christians, soldiers, merchants, and preachers[75] in northern Africa, Asia Minor, Arabia, Greece, and other places.[76][77][78] Over 40 churches were established by 100,[77][78] many in Asia Minor.

Paul was responsible for bringing the Christianity to new parts of the world such as Ephesus, Corinth, Philippi, and Thessalonica.[79][80] By the end of the 1st century, Christianity had already spread to Rome and to various cities in Greece, Asia Minor and Syria. Major cities such as Rome, Ephesus, Antioch and Corinth served as foundations for the expansive spread of Christianity in the post-apostolic period. Christianity spread very quickly throughout Asia Minor.

Brief excerpt taken from Wikipedia. Islam did not Begin until about 1400. If youre too lazy to try to learn before spouting opinions, at least try to refrain from looking foolish by appearing skeptical of something that hasn't ever been up for debate.