The world changed on September 11, 2001, when terrorists attacked the World Trade Center, forever altering America. Due to the violent impact the event had on the nation, it's possible to forget the first strike on New York's Twin Towers: the 1993 World Trade Center bombing (WTCB).
The first strike against the World Trade Center happened almost a decade prior to 2001, but the two plots are linked in several ways. The WTCB can be looked at as a sort of trial run to 9/11. The goal - to topple the Twin Towers - was the same, as was the motivation and international power behind it. In fact, some of the very same individuals who plotted the WTCB managed to maintain their freedom long enough to be involved in 9/11.
The 1993 WTCB was, for the most part, a failed operation, but it helped set the stage for the horror and destruction that would occur eight years later.