Historians need to make a picture of history so people can understand what happened. They use fossils and artifacts to make a picture of what that period of time was like. They interpret objects, and read scripts from that time to trust understand what was going on. This way, people can understand and learn from the past. We do not have to make history repeat itself.
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That would be Adolf Hitler, as stated in this source (History.com) "Hitler appointed a new Nazi government, and on March 13 the Anschluss was proclaimed. Austria existed as a federal state of Germany until the end of World War II, when the Allied powers declared the Anschluss void and reestablished an independent Austria."
<span>The united states </span>constitution.
A. Bacteria in unclean water.
