Gauls
In 58 BC Julius Caesar launched the Gallic Wars and had conquered the whole of Gaul by 51 BC. He noted that the Gauls (Celtae) were one of the three primary peoples in the area, along with the Aquitanians and the Belgae. Caesar's motivation for the invasion seems to have been his need for gold to pay off his debts and for a successful military expedition to boost his political career. The people of Gaul could provide him with both. So much gold was looted from Gaul that after the war the price of gold fell by as much as 20%. While they were militarily just as brave as the Romans, the internal division between the Gallic tribes guaranteed an easy victory for Caesar, and Vercingetorix's attempt to unite the Gauls against Roman invasion came too late. After the annexation of Gaul a mixed Gallo-Roman culture began to emerge.
Julius Caesar
Many rulers in history became interested in the historiography of Caesar. Napoleon III wrote the scholarly work "Histoire de Jules César", which was not finished. The second volume listed previous rulers interested in the topic. Charles VIII ordered a monk to prepare a translation of the "Gallic Wars" in 1480. Charles V ordered a topographic study in France, to place The Gallic Wars in context; which created forty high-quality maps of the conflict. The contemporary Ottoman sultan Suleiman the Magnificent catalogued the surviving editions of the "Commentaries", and translated them to Turkish language. Henry IV and Louis XIII of France translated the first two commentaries and the last two respectively; Louis XIV retranslated the first one afterwards.