How many books are included in Commentarii de Bello Gallico?

Commentarii de Bello Gallico, written by Julius Caesar, encompasses a total of seven books. This work details Caesar's military campaigns in Gaul from 58 BC to 50 BC and is a crucial historical source that provides insights not only into the military strategies employed but also into the customs and cultures of the various Gallic tribes. Each book serves as a distinct narrative, addressing different aspects of the campaigns, including battles, political maneuvers, and interactions with both allies and enemies.

The significance of this work in the context of Roman literature and history cannot be overstated, as it is a primary text reflecting Caesar's perspective and intentions. This is why the inclusion of seven books is a vital aspect of the text, showcasing an organized and chronological account of his experiences and observations during the Gallic Wars. The other numbers presented do not align with the established structure of the work, making seven the definitive answer.