When did Christianity originate?

Christianity originated in 1 century. It is said that Jesus and his twelve apostles began to engage in religious activities in Palestine and Asia Minor.

Christianity is a monotheistic religion, believing that Jesus is the savior. Including Lutheranism, Calvinism, Illegalism and other evangelical churches are collectively referred to as Protestantism, as well as Orthodox Church and Catholicism. This religion believes in the gospel of heaven preached by Jesus, the original sin of Jesus being crucified to save Adam and Eve, Jesus' resurrection, ascension, the second coming of Christ, and the final judgment. Because it is divided into China Catholicism [Old Religion] and China Protestantism [Protestantism] which are integrated with other churches in China, it also refers to the latter.