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Sensors that measure a variety of essential soil properties on the go are being developed. These sensors can be used either to control variable rate application equipment in real-time or in conjunction with a Global Positioning System (GPS) to generate field maps of particular soil properties. Depending on the spacing between passes, travel speed, and sampling and/or measurement frequency, the number of measurement points per acre varies; however, in most cases, it is much greater than the density of manual grid sampling. The cost of mapping usually is reduced as well.
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George Washington (1732-99) was commander in chief of the Continental Army during the American Revolutionary War (1775-83) and served two terms as the first U.S. president, from 1789 to 1797. The son of a prosperous planter, Washington was raised in colonial Virginia.
Martha Washington served as the nation's first first lady and spent about half of the Revolutionary War at the front. She helped manage and run her husbands' estates. She raised her children, grandchildren, nieces, and nephews; and for almost 40 years she was George Washington's "worthy partner".
Nathanael Greene was one of the most respected generals of the Revolutionary War (1775-83) and a talented military strategist. As commander of the Southern Department of the Continental army, he led a brilliant campaign that ended the British occupation of the South.
George Rogers Clark is remembered as the heroic Revolutionary War commander who led a small force of frontiersmen through the freezing waters of the Illinois country to capture British-held Fort Sackville at Vincennes during February 1779.
Alexander Hamilton was an impassioned champion of a strong federal government, and played a key role in defending and ratifying the U.S. Constitution. As the first secretary of the U.S. Treasury, Hamilton built a financial foundation for the new nation, against fierce opposition from arch rival Thomas Jefferson.
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American isolationist sentiment actually began immediately following the Revolutionary War and then increased drastically after WWI, when many American troops died for a war overseas.
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Explanation:
I use the acronym M.A.N.I.A to help my students remember the 5 major causes of WWI; they are Militarism, Alliances, Nationalism, Imperialism, and Assassination. Each of these topics played a significant role in the reasons why WWI would begin.
Assassination of Archduke Franz Ferdinand: In June 1914, Archduke Franz Ferdinand, the heir to the throne of Austria-Hungary, was shot while he was visiting Sarajevo in Bosnia. ... Because its leader had been shot, Austria-Hungary declared war on Serbia. As a result: Russia got involved as it had an alliance with Serbia.
9 million soldiers and as many civilians died in the war. Germany and Russia suffered most, both countries lost almost two million men in battle. Large sections of land, especially in France and Belgium, were completely destroyed. Fighting laid buildings, bridges and railroad lines in ruins.
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A progressive social reformer and activist, Jane Addams was on the frontline of the settlement house movement in the late 19th and early 20th centuries. She later became internationally respected for the peace activism that ultimately won her a Nobel Peace Prize in 1931, the first American woman to receive this honor.
