Answer:
BC stands for “Before Christ” and it refers to all time before the theoretical birth of Jesus Christ1. It is part of the Christian Era, which also includes AD (Anno Domini) for the time after Christ’s birth1. On a timeline, BC dates are written after the year, such as 48 BC2, and they count backwards from 1 BC to infinity. AD dates are written before the year, such as AD 2023, and they count forwards from AD 1 to infinity. There is no year zero in this system1.
Step-by-step explanation: