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1st permanent English settlement in North America. It was founded on May 13 by the Virginia Company of London. It was for King James I.

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The Louisiana Purchase happened when Thomas Jefferson bought land from France in 1803. The Purchase costed $15 million and the land area stretched out about 828,000 miles.

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President Andrew Jackson implemented the Indian Removal Act, causing the Native Americans to migrate. During this migration, many have died on the way.

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Treaty ended war between Mexico and the US. This included territorial cession which doubled the size of the US. These would be present day California, Nevada, Utah, Arizona, New Mexico, etc.

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The California gold rush when gold was found in California. This was a period of massive migration. Gold was discovered at Sutter's Mill and population increased.

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President Wilson creates the National Park Service through the National Park Service Organic Act. This was for the conservation of the natural and historic objects in these parks.

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The Dust Bowl was a time when there were great ecological disasters in areas like the Great Plains. There were disasters such as dust storms and drought.

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TVA is a New Deal program to improve the lives of the people in the Tennessee Valley. It involved flood control, navigation improvements, and electricity generation. It promoted more agricultural and industrial growth in the region.

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The Organization of the Petroleum Exporting Countries was founded in Baghdad by Iran, Iraw, and other countries. The goal of the OPEC was to coordinate their petroleum policies and influence global oil prices.

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Made in 1970 in response to growing public and political concerns about air and water pollution. These concerns centered around the effects of pesticide use. Nixon made the EPA and signed it into a law.

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U.S Federal law that regulates air emissions and sets standards for air quality. This authorized EPA (Environmental Protection Agency) to establish air quality standards. States were now required to develop State Implementation plans.

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Primary federal law in the U.S that governs pollution. It's main goal is to maintain the chemical and physical aspects of the waters. It was built up on the EPA and set water standards and regulated pollutant discharges.

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The Exxon Valdez oil tanker released 11 million gallons of oil into the ocean. This incident was one of the most devastating environmental disasters. It showed the dangers associated with the transportation of oil.

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Since the year 2000 there has been a rise in temperature throughout the United States. There were also extreme weather events and changes in patterns that were caused by global warming.