Julius Caesar

To pay for these, he borrowed money from Crassus and Pompey in a three-way alliance known as the First Triumvirate: to cement their relationship further, Caesar gave his daughter Julia to Pompey in marriage. Thus backed, Caesar was elected consul for 59bc despite Optimate hostility, and the year after (58bc) he was appointed governor of Roman Gaul.
             At the time Celtic Gaul, to the north, was still independent, but the Aedui, a tribe of Roman allies, appealed to Caesar for help against another Gallic people, the Helvetii, during the first year of his governorship. Caesar marched into Celtic with six legions, defeated the Helvetii, and forced them to return to their home area. Next, he crushed Germanic forces under Ariovistus (flourished about 71-58bc). By 57bc, following the defeat of the Nervii, Rome was in control of northern Gaul.(A last revolt of the Gauls , led by Vercingetorix, was suppressed in 52bc).
             While Caesar was in Gaul, to the north, was still independent, but the Aedui, a tribe of Roman allies, appealed to Caesar for help against another Gallic people, the Helvetii, during the first year of this governorship. Caesar marched into Celtic Gaul with six .
             legions, defeated the Helvetii, and forced them to return to their home area. Next, he crushed Germanic forced under Ariovistus (flourished about 71-58bc). By 57bc, following the defeat of the Nervii Rome was in control of northern Gaul. ( A last revolt of the Gauls, led by Vercingetorix, was suppressed in 52bc.).
             While Caesar was in Gaul, his agents attempt to dominate politics in Rome. This, however, threatened Pompey's position, and it became necessary for the triumvirs to arrange a meeting at Luca in 56bc, which brought about a temporary reconciliation. It was decide that Caesar would continue in Gaul for another five years, while Pompey and Crassus would both be consuls for 55bc; after that, each would have proconsular control of provinces.