Explanation:
American frontier, in United States history, the advancing border that marked those lands that had been settled by Europeans. It is characterized by the westward movement of European settlers from their original settlements on the Atlantic coast (17th century) to the Far West (19th century).
"After President Nixon ordered the U.S. military to stop spraying Agent Orange in 1970, this is the site where all the Agent Orange barrels remaining in Vietnam were collected. ... Based on their research, Olson and Wright Morton recommend incineration of contaminated soils and sediments at the Vietnam airbase hotspots.
Reganomics refers to the economic policies US President Ronald Regan promoted during the 1980's. These policies were made to reduce the growth of government spending, reduce the federal income tax and capital gains tax, reduce government regulation and tighten the money supply in order to reduce inflation.<span />
<span> low inflation because costs are not rising faster , Meaning Low inflation leads to things stay at a low cost .</span>
Answer:
Significance. The period saw a fundamental transformation in scientific ideas across mathematics, physics, astronomy, and biology in institutions supporting scientific investigation and in the more widely held picture of the universe. The Scientific Revolution led to the establishment of several modern sciences