Answer:
Advances in assembly line mass production
Large-scale production reduces costs of automobiles
Growth in personal automobile ownership
Commuters face traffic congestion
Explanation:
False.
The amount of years for service varied and was decided by the contractor, for adults it was typically around 4 to 7 years but it wasn't always only seven years.
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Answer:
Aqueduct
Explanation:
an artificial channel for conveying water, typically in the form of a bridge across a valley or other gap.