Step 1 : Introduction to the question "2. Tradition says the present era is dated from the birth of this man in AD 1. Who was this man?"
...1. Mohammed 2. Vishnu 3. Siddhatha Gotama 4. Jesus Christ I say 'tradition' because historians and Bible scholars both say that the year of Jesus' birth was actually about 4 BC. Often BC (Before Christ) has been replaced with BCE (Before Common Era) in order to be multicultural.
