It is important to wash your hands so you can prevent yourself from getting diseases and/or giving someone else them in return. Another reason is to prevent yourself from getting the flu and other sicknesses. Plus it is good hygiene and makes for good habits and cleanliness
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Christopher Colombia thought of going around the Atlantic to reach Asia but ended up finding himself in an entirely new continent.
Fun-Fact: Christopher Columbus did not discover the Americas that achievement goes to Leif Erikson and even before that The Native Americans.