Answer:
Paris, Lyon, Toulouse and Marseille are densely populated cities due to its geography.
Explanation:
Paris is located in the north while Lyon is located in the east side and both Toulouse and Marseille are present in the south inside the France. These are the highly populated cities of France. All these cities are surrounded by mountains having plain areas and present along the river. These physical features of the cities make them densely populated areas of France. These locations have one thing in common is that they all are present along the rivers.
