The creation of the French protectorate in 1881 was a turning point in Tunis's history, leading to rapid redevelopment of the city in the span of two to three decades. The city quickly spread out of its fortifications: it divided into a traditional Arab-populated old city, and a new city populated by immigrants, with a different structure from that of the traditional medina. Tunis also benefited from the French construction of a water supply, natural gas and electricity networks, public transport services, and other public infrastructure.