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American industry first used machines to do work previously done by hand is letter D which is cotton farming. Cotton has been in American industry since 1500's documented from sightings by the Coronado expedition 1540-42. White Gold is the appropriate term for cotton, <span>the natural fiber which continues to play an important role in the United States economy.</span>
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The exchange of incoming and outgoing radiation that warms the Earth is often referred to as the greenhouse effect because a greenhouse works in much the same way. Incoming UV radiation easily passes through the glass walls of a greenhouse and is absorbed by the plants and hard surfaces inside.

Answer:
The Enlightenment, a philosophical movement that dominated in Europe during the 18th century, was centered around the idea that reason is the primary source of authority and legitimacy, and advocated such ideals as liberty, progress, tolerance, fraternity, constitutional government, and separation of church and state. The Enlightenment produced numerous books, essays, inventions, scientific discoveries, laws, wars and revolutions. The American and French Revolutions were directly inspired by Enlightenment ideals and respectively marked the peak of its influence and the beginning of its decline. Terms in this set (22) An eighteenth century intellectual movement whose three central concepts were the use of reason, the scientific method, and progress. Enlightenment thinkers believed they could help create better societies and better people.
Explanation:
There are two countries that border the United States: Mexico and Canada.
To the <u>north</u> lies the Canada-United States border, and to the <u>south</u> lies the Mexico-United States border.
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