A map titled The Roman Empire, circa 117 C E. A key shows the Roman Republic, 44 B C E in purple and the Roman Empires, 117 C E in green. Purple shaded areas include the coast along central north Africa, most of Spain and Portugal, France, Italy, Corsica, Sardinia, Sicily, Italy, the coast land from Italy southeast to the Aegean Sea, parts of Turkey. Green shaded areas include: northern Spain, England, central European countries east of Italy, the rest of Turkey and eastward, the east and west coast of North Africa.
Which statement best describes the extent of the Roman Empire at its height?

It controlled the Mediterranean Sea and had territory in three continents.
It stretched from the Atlantic Ocean to the Pacific Ocean.
It controlled all of the modern nations of Europe.
It controlled the Black Sea, but only had territory in Europe.

answer is a

Explanation:

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.