Why is September 11, 2001 a significant dat in us history

Its significant because two planes crashed the twin towers.

Explanation:

On September 11, 2001 a group of Islamic people hijacked four planes and planned to attack the target which is the United States. The planes were flown into the twin towers of the World Trade Center, causing them to crash and fall. This was in New York City and a third plane crashed into the pentagon in Washington D.C., the fourth plane crashed into a field in Pennsylvania. 3,000 people where killed by this crash and all of this became know as 9/11.

no one really purchased it themselves, it was all america, they had debates etc.

saint genesius of rome was an actor, a comedian. according to the legend, he decided to fake his baptism, as in a play, before emperor diocletian. it is said that in the middle of his "baptism" -by a fake priest-, a miracle occurred when water came in contact with him, he really turned into a christian, a real one, and because of this he was tortured and executed. his own relics are allegedly held in the church of several churches in rome, namely: san giovanni della pigna, santa susanna di termini, and st. lawrence.