Gis is based on at least two important areas of technology
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a gathering digital spatial data and creating digital maps,
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b hard drives and video cards
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c, creating digital maps and transforming digital maps.
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d
gathering digital spatial data and printing maps,

president franklin roosevelt supported the tva as part of his first new deal measures approved by congress in 1933. this new agency was designed to control floods, produce electric power, and improve the lives of people living in the tennessee valley. the tva accomplished many of these goals despite problems.

"a shortage of traditional labor created new opportunities in the workplace. a major cause of the internment of japanese americans during world war ii was. racial prejudice. in the early 1940's, the "destroyers-for-military-bases deal" with great britain and the lend-lease act were evidence that the united states."

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