Germany hoped to achieve a quick victory in the first world war by invading which country first?
a. russia
b. great britain
c. france
d. serbia

The best answer is  C

The plan to attack France first was a plan by the German Chief of General Staff, Alfred Von Schlieffen which he came up with way back  in 1905.

He decided that France was the enemy to be defeated first, with Russia held off until the French were annihilated. He  worked out a detailed time timetable that took into account possible French responses to German actions. He believed that Germany would defeat France within six weeks, then after that  he would turn his full force on Russia. 

Schlieffen plan was heavily modified by his successor Moltke, thus during the outbreak of WWI in 1914, it was not implemented  as Schlieffen had envisioned.

the underground railroad (apocope of the metropolitan railroad) is a system of urban trains located within a city and its metropolitan area. it is characterized for being a massive transport of passengers in the big cities, uniting diverse zones and their environs, with high capacity and frequency and in segregated form to other systems of transport. metropolitan railroads are built underground or on the surface, although most systems use mixed models where sections are combined in both modalities.

1 - as a result, the metro tends to reduce car travel for two reasons: first, due to the greater transfer of users from the car and, second, due to the reduction in the acquisition of cars in homes located in sectors near the stations of the metro.

2 -the metro allows to contribute effectively to the achievement of all the objectives of an urban development policy: it improves the efficiency of the city's economy by reducing travel costs and also generates a higher level of activities in the city center, taking advantage of of the agglomeration economies.

3 -it is a clean means of transport, since it uses renewable energy (usually electricity), taking care of the environment and avoiding excessive pollution.

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