By 1920, more Americans lived in cities than in rural areas. What was one explanation of this change?
The growth of railroads caused towns to spring up along their routes,
Industries tended to develop and grow in key cities, Factories needed large numbers of workers. People moved into the cities to work
in those factories
O Most farmers moved from rural areas into cities, where they bought small plots of land, They grow food for their own families there
The government wanted cities to grow, so it pold Immigrants from Europe to move into the cities,

the industries grew and gheir were more jobs that weren't farming so they moved into the cities

Explanation:

the correct answers are the following

a proxy war which functioned as a training field for wwii

republican democratic goverment

national side, leaded by the fascist general franco

the spanish civil war took place between 1936 and 1939 and was fought after a military coup undertaken on the 17th july 1936 by a group of generals that had seceeded from the spanish republican army, under the leadership of general franco, and who aimed to expel the democractically-elected republican goverment from power.

this war became a proxy war in which european powers tested their military equipment. on one side, urss and mexico supported the left-wing republican spanish goverment, while nazi germany and fascist italy supported the national fascist side.

franco managed to win the war in 1939, with the significant contribution of the foreign military support, and became the dictator of spain until his death in 1975.

explanation:

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