This conflict was precipitated by the Aedui being pushed out by the (*)  
During this conflict, Divico's failed embassy preceded his defeat at the Battle of Bibracte. Aulus Hirtius wrote part of a history of it. High tides and unfamiliarity with chariots hindered the attacking force in this conflict, which was led by a proconsul of Illyricum who lost the Battle of Gergovia. This conflict was precipitated by the Aedui being pushed out by the (*)  Helvetii. It was ended after the Battle of Alesia. A set of "commentaries" on this war begins by stating that its namesake region is divided into three parts. For 10 points, name this war in which Julius Caesar fought Vercingetorix and the Celtic tribes of what is now France.
During this conflict, Divico's failed embassy preceded his defeat at the Battle of Bibracte.
Gallic  Wars [accept any answer describing a war between  Rome  and  Gaul]