US History This Day in American History September 1 1775 King George refuses Olive Branch Petition - Richard Penn and Arthur Lee, representing the Continental Congress, present the so-called Olive Branch Petition to the Earl of Dartmouth on this day in 1775. Britain’s King George III, however, refused to receive the petition, which, written by John Dickinson, appealed directly to the king and expressed hope for reconciliation. US History This Day in American History September 1 1807 Aaron Burr acquitted - Former U.S. vice president Aaron Burr is acquitted of plotting to annex parts of Louisiana and Spanish territory in Mexico to be used toward the establishment of an independent republic. US History This Day in American History September 1 1985 Wreck of the Titanic found - Seventy-three years after it sunk to the North Atlantic ocean floor, a joint U.S.-French expedition locates the wreck of the RMS Titanic. The sunken liner was about 400 miles east of Newfoundland in the North Atlantic. American Robert D. Ballard headed the expedition, which used an experimental, unmanned submersible. US History This Day in American History September 1 1998 Federal legislation makes airbags mandatory - On September 1, 1998, the Intermodal Surface Transportation Efficiency Act of 1991 finally goes into effect. The law required that all cars and light trucks sold in the United States have air bags on both sides of the front seat.