Here are some one liners...
Machiavellian Beginnings: It is Better to be Feared than Loved -- Machiavelli is born. He is famous or infamous for his book "The Prince" where he gives realistic and some would say cynical advice in statecraft. "It is bettered to be feared than loved" is a misunderstood idea so I explain it briefly.
The Aztec Calendar Stone -- The Sun Stone is the circular Aztec calendar with a face in the center. It was commissioned by the Aztec Emperor who takes the throne this year. A also talk about the Julian vs Gregorian calendar.
Born to Find the Ocean Route to India -- (Short) Vasco da Gama is born.
Born to be the First of the Sikh Gurus -- (Short) Guru Nanak is born.