April 17 (UPI) -- On this date in history: In 1421, the sea broke the dikes at Dort, Holland, drowning an estimated 100,000 people. In 1521, the Roman Catholic Church excommunicated Martin Luther after he refused to admit to charges of heresy. In 1790, U.S. statesman, printer, scientist and writer Benjamin Franklin died in Philadelphia at age 84. File Photo by Kevin Dietsch/UPI In 1912, the sister ship of the doomed RMS Titanic, the Olympic, radioed in that survivors of the ocean liner sinking