On this day: March 22

POSTED: 12:02 PM PDT Mar 18, 2013    UPDATED: 11:00 PM PDT Mar 21, 2013 
Dachau concentration camp, Germany World War II

Thomas Jefferson becomes the first secretary of state, the Dachau concentration camp opens, The Beatles release their first album, and the Comet Hale-Bopp does a fly-by, all on this day.