On May 27, 1860, Giuseppe Garibaldi began his attack on Palermo, Sicily, as part of the Italian unification.
In 1927 on this date in May, the Ford Motor Company ceased manufacture of the Ford Model T, the last of this model coming off the line the day previous. Over 16 million Model T Fords had been sold, and was a world transformative product. On the 27th, the company began to retool plants to make the Ford Model A.
Exactly 70 years later, the U.S. Supreme Court ruled that Paula Jones could pursue her sexual harassment lawsuit against President Bill Clinton while he was in office.
In 2015, 27 May, the commercial space company SpaceX was approved as a contractor to the U.S. military for satellite launches; SpaceX has since led the world in its use of re-usable booster rockets which, after sending up orbital rockets, return to a sea surface platform for a safe vertical landing.