Final answer:
The major event that happens in 70 AD is the Destruction of the Second Temple, impacting both Judaism and Christianity. It leads to the dispersion of Jews and the development of rabbinic Judaism, while in Christianity, it reinforces the belief in Jesus as the new temple.
Step-by-step explanation:
The major event that happens in 70 AD is the Destruction of the Second Temple. This event had a significant impact on both Judaism and Christianity.
For Judaism, the destruction of the Second Temple led to the dispersion of Jews and the development of rabbinic Judaism. Many Jews were enslaved or deported, resulting in the Jewish diaspora. Without a centralized temple, Jewish religious life shifted towards the study of the Hebrew Bible, the teachings of rabbis, and cultural traditions.
On the other hand, Christianity was influenced by the destruction of the Second Temple as well. It led to the development of early Christian theology, as the destruction of the temple reinforced the belief that Jesus Christ was the new temple, and the focus shifted towards the worship of Christ rather than the physical temple.