What was the purpose of laborsaving devices

To make process more efficent and reduce the amount of manpower needed. Reducing manpower may reduce costs.

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select all that apply.

walter cronkite's special interview from vietnam had which of these effects? oijohkn

expla? ;

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answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast