9/11 is so important i n history today because they was not only known to be the tallest buildings or twin tower they were the WTC (World Trade Center ) plus they were mostly filled with financial people . Trade was conducted with foreign countries, and we held meetings with foreign political leaders there...More importantly however, the towers stood for a meaning of strength, and connection for both our country, and the rest of the world. But once the planes hit the building everything was destroyed and people lost lives .
