Christianity typically begins from the beginning of the current era, which is marked by 1 AD. This first year is traditionally the period when Jesus was born. As such, Christianity has a history that dates back roughly 2000 years.

There was one church and one religion in the middle ages and that was Catholic. So, any timeline would be of the Catholic Church.

Christians believe that Jesus was crucified in Jerusalem. The crucifixion of Jesus and Holy Week is the most important time in a Christian's timeline.

i would just like to say that the name Christianity was not given to the religon during Jesus' time but much later. In fact of the 3 major monotheistic religions only one was given a name when it came right away which is Islam.--------by scholar.in.pursuit

it is a timeline that has multiple other timelines in it