Well to keep there population stable. They didn't want to overpopulate their country and run out of resources
Answer:
Machinery during the Industrial Revolution such as the spinning wheel to produce textiles, the water wheel used to power machinery and the steam engine were invented. These inventions aided in speeding up the production of manufactured items.
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The Sherman burns less gas and oil and as a result is able to go much farther on a tank full of gasoline.