Caesar refused, and marked his defiance in 49 BC by crossing the Rubicon River at the head of his army, leaving his province and illegally entering Roman territory under arms.
Augustus | Center for Constitutional Rights | Constitutional Court | Augustus John | Augustus Saint-Gaudens | 1975 Australian constitutional crisis | Augustus Pugin | Augustus II the Strong | Augustus De Morgan | Federal Constitutional Court of Germany | Charles Augustus FitzRoy | F. Augustus Heinze | Ernest Augustus I of Hanover | Ernest Augustus I, Duke of Saxe-Weimar-Eisenach | Supreme Constitutional Court | Sigismund II Augustus | Constitutional Council of France | constitutional amendment | Augustus III of Poland | Augustus (honorific) | Seimone Augustus | Secretary of State for Constitutional Affairs | George Augustus Eliott, 1st Baron Heathfield | Frank Augustus Miller | constitutional law | Constitutional Court of Spain | Constitutional court | Constitutional Assembly of Indonesia | Augustus Pablo | Augustus Noble Hand |