The Middle Ages are called the dark ages because it was a dark time for people living in poverty
the gas is carbon-dioxide....
Britain entered World War I in 1914 to honor a treaty that promised to defend Belgium and to fulfill an alliance with France and Russia. The Germans attacked Liege, Belgium, in the first battle of World War I, and then marched on to attack France.
I'm assuming by "war" you mean World War I
<span>Michelangelo, in full Michelangelo di Lodovico Buonarroti Simoni (born March 6, 1475, Caprese, Republic of Florence [Italy]—died February 18, 1564, Rome, Papal States), Italian Renaissance sculptor, painter, architect, and poet who exerted an unparalleled influence on the development of Western art. I hope this helped you ^^</span>
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Source: http://www.loc.gov/teachers/classroommaterials/presentationsandactivities/presentations/timeline/civilwar/recontwo/