The history of early Christianity bridges over the period from the death of Jesus Christ and birth of the Apostolic Age in about the year 30 to the First Council of Nicaea in 325.
The period 200 BC to 200 CE was a time of history-making changes in Jewish culture and religious and political philosophy. It also harbors the beginnings of the development of Christian philosophy, culture and beliefs. For these reasons events of that period still exerts considerable influence on large segments of Western philosophy and culture today. That is what makes it such an interesting period to study.