Why did the Newcomen Engine remain essentially the same for a century after its invention?
a) Because it was efficient enough to drain mines, no one thought it needed to be changed.
b) It was so inefficient that hardly anyone used it, so no one bothered to try to improve it.
Consider This: Europeans at the time had few tasks requiring repetitive, artificial power. See 7.2.2: Energy Unbound.
c) The constant alternation of steam and cold water meant the engine frequently exploded, and it was too expensive to replace regularly.
Consider This: Europeans at the time had few tasks requiring repetitive, artificial power. See 7.2.2: Energy Unbound.
d) The terms of Newcomen’s patent required that no change ever be made to it.
Consider This: Europeans at the time had few tasks requiring repetitive, artificial power. See 7.2.2: Energy Unbound.
a) Because it was efficient enough to drain mines, no one thought it needed to be changed.
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On what basis did historian Davis Eltis claim that “In terms of immigration alone . . . America was an extension of Africa rather than Europe until the late nineteenth century”?
a. Africa had a much greater impact than Europe did on nineteenth-century American culture. b. Between 1650 and 1831, more Africans than Europeans came to the Americas. c. Africa was physically closer than Europe to America. d. Africans made a greater contribution than Europeans did to the economies of the Americas.
The Tokugawa regime in Japan maintained formal diplomatic relations only with
A. the Dutch Republic. B. Korea. C. Vietnam. D. China. E. Cambodia.
Infections associated with the Black Death were thought to be caused by a
A. fungus. B. bacterium. C. virus. D. vector.
What did Britain hope for in unilaterally dropping customs barriers in favor of free trade?
A. that others would follow suit and all would benefit B. that Britain could reduce the size of the prohibitively expensive Royal Navy C. that foreign investment in British industries would increase D. that some of their domestic manufacturing could be moved to the colonies