•f. scott fitzgerald
• ernest hemingway
• william faulkner
• gertrude stein

the individuals in the box above were all in the 1920s.

a.) progressive leaders
b.) harlem renaissance leaders
c.) american writers
d.) famous inventors

The correct answer is C. American writers.

Explanation

F. Scott Fitzgerald was an American writer who was born in 1896 and died in 1940, he wrote 5 novels among those are This Side of Paradise (1920), The Great Gatsby (1925), Tender Is the Night (1934) and The Last Tycoon (1941).  

Ernest Hemingway was an American writer who was born in 1899 and died in 1961, he wrote 10 novels among those are The Torrents of Spring (1926), The Sun Also Rise (1926), A Farewell to Arms (1929) and To have and Have Not (1937).

William Faulkner was an American writer who was born in 1897 and died in 1962, he wrote 19 novels among those are Soldiers' Pay (1926), Mosquitoes (1927), Sartoris (1929), The Sound and the Fury (1929) and As I Lay Dying (1930).

Gertrude Stein was an American writer who was born in 1874 and died in 1946, she wrote around 26 documents among those are A Circular Play (1920), Useful Knowledge (1929), The Making of Americans: Being a History of a Family's Progress (1925) and How to Write (1931).

So, the correct answer is C. American writers.

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.

"globalization has greatly impacted the united states and american citizens. first and foremost, globalization has spread american influence throughout the world. globalization has opened up more markets for the united states, which in effect american companies sell their products worldwide. there has been a rise of multinational corporations and their influence has greatly increased."