9/11 attack in USA.what is happening?

The morning of September 11th in America was quite unlike anything seen before. The events in USA were a world changing event. The World Trade Centre used to be an iconic building in New York, which collapsed. In total, there were a total of four different planes hijackings. United Airlines flight 93 is the most outstanding of those four since we saw an amazing heroic gesture. But the whole incident, permanently caused some changes across the world. In this mini- documentary video, I describe the sequences of events during the 9/11 and how these events changed the world forever.