According to Phillip Jenkins, the particular shape of Christianity with which we are familiar is a radical departure from what was for well over a millennium the historical norm: another, earlier global Christianity once existed.
For most of its history, Christianity was a tricontinental religion, with powerful representation in Europe, Africa, and Asia, and this was true into the fourteenth century.
Christianity became predominantly European not because this continent had any obvious affinity for that faith, but by default: Europe was the continent where it was not destroyed.
via Tim Challies
While you’re there, a well recommended study of the questions that Jesus asked is just $1.99.