The reason why many of the machines that sped up production and travel invented during the 18th and 19th centuries is because "<span>D. There was a heightened interest in science during this time," since this was during the age of the Enlightenment. </span>
the answer is A they wouldn't receive salaries
Francis Bacon also Rene Descartes were responsible for developing the five-step scientific theory during the Scientific Revolution.
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