How did Christianity begin and was unique about it?

Christianity began in the 1st century CE as a movement within Judaism, centered around the life and teachings of Jesus of Nazareth, who Christians believe is the Messiah and Son of God. Its uniqueness lies in its emphasis on grace, forgiveness, and the idea of a personal relationship with God, as well as the belief in the resurrection of Jesus, which signifies hope and eternal life. Early followers, including apostles like Paul, spread its message across the Roman Empire, often in contrast to prevailing religious and cultural norms. This inclusive approach attracted diverse followers, setting Christianity apart from other contemporary religions.