This graph shows life expectancy in the united states. which factor best explains why the graph changes from 1990 to 2010? new technology protects soldiers from risky reconnaissance missions. new technology allows farmers to grow genetically modified crops. new technology allows us to find and use new energy sources. new technology has improved medical imaging and surgery.

The correct answer is - New technology has improved medical imaging and surgery.

The technology is developing very rapidly, and every year it makes big strides forward, and this includes the medical field as well. Pretty much everything in the medical field has been significantly improved, like the medical imaging and the surgeries, and that is saving millions of lives each year.

Because the medical field has improved so much, the people are able to live longer, thus the life expectancy is growing, and as the technology improves in the future, it will grow even further.

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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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