 Complete the following phrase:  In November 1898, the City of Paris decided to undertake preliminary work of the metro network with the construction of the first line of the Parisian subway system. Work lasted twenty months under the leadership of engineer Fulgence Bienvenüe and was ficed by the municipality of Paris. The line was divided into eight parts distributed between several companies. On 19 July 1900, the line was opened between Porte Maillot and Porte de Vincennes to connect the various sites of the 