How does a new era begin?

The new era begins with the birth of Jesus Christ, that is, from the year 0. So at the moment we have 2018 since the birth of Christ. So after the birth of Jesus, all the events that happened before this are considered to be “BC”. Thus, such events can be attributed to the ancient period of history, when there were ancient states: Rome, Greece, Macedonia, etc.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.