On this day in 1916, Albert Einstein published his general theory of relativity.
On this day in 1995, a sarin gas attack on the Tokyo subway killed 13 and wounded 1,300 persons.
On this day in 1999, Legoland California, the only Legoland outside of Europe, opened in Carlsbad, California.
On this day in 2003, in the early hours of the morning, the United States and three other countries began military operations in Iraq.