Willhelm Wundt, the founder of the Leipzig Laboratory at Leipzig University, made his laboratory for the general study of PSYCHOLOGY.
Battle of Trenton, and Washington defeated a formidable garrison of Hessian mercenaries before withdrawing.
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Chemical warfare was considered deadly during WWI because the technology was new and no one had Gas masks. And because no one had gas masks it would often kill or injure many solders.
Explanation:
Social Effects of the Great Depression, was the Optimism to Despair: The optimism disappeared almost overnight when the Wall Street crash on October 29, 1929, triggered the Great Depression starting the downward economic spiral that lead to bankruptcies, mass unemployment, homelessness, and despair.