Rubicon

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Rubicon

Rubicon , Lat. Rubico, small stream that flows into the Adriatic and in Roman times marked the boundary between Cisalpine Gaul and ancient Italy. In 49 BC, after some hesitation, Julius Caesar crossed the Rubicon to march against Pompey in defiance of the senate's orders. He thus committed himself to conquer or to perish, and "to cross the Rubicon" now means to take an irrevocable step.

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Rubicon

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

Rubicon Ancient name for the River Fiumicino in n central Italy. It formed the border between Italy and Cisalpine Gaul. In 49 bc, Julius Caesar precipitated civil war by ‘crossing the Rubicon’ into Italy with his army, hence the modern phrase meaning to take an irrevocable step.

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