Auschwitz concentration camp started operation after 728 Polish prisoners became the first to arrive.
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Isaac Fischer Jr. patented sandpaper in Springfield, Vermont, US.
Police checks on drunk drivers was declared constitutional by the US Supreme Court.
President Richard Nixon implemented a 60-day price freeze across the US.
Edward Snowden was charged with spying and stealing 'government property.'
Leonard Norcross was granted the first US patent for an underwater diving suit.
