They built aqueducts that retrieved water from the mountains
Answer:
Indigenous peoples were able to use livestock and plows brought from Europe to farm the land more efficiently.
The US may eliminate a tariff because the increase of specialization and the benefits from economy scales.
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The answer would be that stress rises from both the occurrences and our cognitive appraisal of them. Cognitive appraisal means that it is the personal understanding of a condition that eventually influences the degree to which the situation is professed as stressful.
