Julius Caesar crossed the Rubicon River in Northern Italy and set off a civil war in the Roman Republic. January 10, 49 BCE.

Image: Julius Caesar crossing the Rubicon.

On this day in history, January 10, 49 BCE, Julius Caesar crossed the Rubicon River in Northern Italy and set off a civil war in the Roman Republic. There had been many civil wars over the previous century in the Roman Republic, yet the one begun by Julius Caesar would alter Roman history forever. On January 10,…