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bogdanovich [222]
3 years ago
9

What was the Roman method for spanning great distances when building aquaducts?

History
1 answer:
kotegsom [21]3 years ago
6 0
The aqueduct tunnels were built following an ancient Persian technique called qanat. This consisted of digging shafts (putei) at consistent horizontal intervals, normally around 230 feet.
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Negative externality- A externality that has a negative and harmful effect on society, as well as firms, are called negative externalities.

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Positive externality - An outcome of the decisions and execution of a company that has led to positive consequences for both company and the society.

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To learn more about externalities please click on the link brainly.com/question/16968584

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The correct answer is - c. exportation of tobacco.

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