We all know in Lebanon March 14th 2005 what happened, but let us check other points at history elsewhere.
Gold Standard Act- March 14, 1900: An Act To define and fix the standard of value, to maintain the panty of all forms of money issued or coined by the United States, to refund the public debt, and for other purposes. link
Seven Catholic saints die between 10th and 14th century. link
Albert Einstein was born on March 14th 1879 link
The Nashville Tornado strikes on March 14th 1933, link
On March 14, 1896, seven thousand people gathered at San Francisco's Ocean Beach to celebrate the official opening of the Sutro Baths, an extravagant public bathhouse envisioned and developed by the eccentric one-time mayor of San Francisco, Adolph Sutro.
On March 14, 1955, AT&T Bell Laboratories announced the completion of the first fully transistorized computer. The computer, officially named TRADIC, was informally known as the "giant brain." link
March 14, 1907, a massive flood strikes Southern Ohio link
March 14, 1883 Karl Marx, cofounder of the science of Communism, dies at 64
Deaths of famous people: here
See list of birthdays on that day link
Timeline for events is here