Council of Paris

The North-South Underground Electric Railway Company of Paris, better known as the Nord Sud, began building its own lines to and from the suburbs in 1910.

Over the next couple of decades, the CMP and the Nord Sud built out their competing networks, The Paris Council would collect a portion of the revenues from both systems and eventually compelled their merger.

The Paris Metro had a definite positive impact on the city.

By moving underground and reducing the need for horse carriages and later cars, the Metro greatly reduced street pollution, noise, and traffic congestion.