Which of the following counties were the two strongest countries in europe at the end of the 19th century
•france and spain
•russia and china
•italy and japan
•germany and great britain

Germany and Great Britain

Explanation:

At the end of the 19th century, there were several countries in Europe that were very powerful, some more than others, and some being on the downfall, while others were propelling themselves as strong countries. The two most powerful in this period seem to have been Germany and Great Britain.

Germany, under the leadership of Otto fon Bismark, propelled itself as a strong country after it unified. Even thought he country didn't had a global empire as some other countries, when it come to one on one military conflict it was more than able to take down the other countries.

Great Britain, on the other side, for several centuries has been a global power, and unlike other countries, such as Spain, it was still holding on to its power. In fact, not just that it had strong military, but Great Britain had a vast empire stretching on several continents, managing to control it with relative ease.

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.

for this case we have the following equation:

we apply distributive property to the terms within parentheses.

subtracting 2 on both sides of the equation: