French Colonial Forts were military structures built by the French during their colonial expansion from the 17th to the 19th centuries. These forts were strategically located to protect trade routes, establish control over territories, and defend against rival powers. Notable examples include Fort Louisbourg in Canada and Fort Saint-Jean in present-day Vermont. Constructed using local materials, these forts often featured thick stone walls, bastions, and moats. They served as bases for military operations and centers for trade, helping to spread French culture and influence in regions like North America and the Caribbean.