The Congress of Vienna, which lasted from 1814-1815, resulted in German state(s) being officially recognized.

The Congress of Vienna, which lasted from 1814-1815, resulted in Confederation of German state(s) being officially recognized.

Explanation:

After the fall of Napoleon and the Congress of Vienna it was decided that a Confederation of German States, exactly 39 of them will be created. The main role in the confederation was played by Austria, but it was more than obvious that Prussia was a force to be recognized in that period. The creation of this Confederation was just one step towards the final unification of Germany.

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.

the authority to tax.