Gallia Belgica was a province of the Roman Empire located in what is now modern-day Belgium, Luxembourg, and parts of France and Germany. Established around 27 BC, it was part of the larger region known as Gaul. The province was known for its diverse tribes, including the Belgae, who were a mix of Celtic and Germanic peoples. The capital of Gallia Belgica was Durocortorum, present-day Reims in France. The province played a significant role in trade and military activities during the Roman period, with well-developed roads and cities. It was an important area for the Roman economy and culture, influencing the development of the region.