Because it encouraged later revolutions in other parts of the world. :)
"<span>Slavery was abolished in the United States" has nothing to do with the Dredd Scott case, which instead said that blacks had no standing in court because they were not citizens. </span>
Here are some effects of 9/11
1. Many Survivors still have health problems facing them today due to effects of 9/11
2. The TSA was tasked with instituting new security procedures and managing screenings at every commercial airport checkpoint in the country
3. The U.S. intelligence state boomed in the wake of 9/11. The growth resulted in a increase in government oversight, mainly through a clandestine network of phones and web surveillance.
4. 9/11 Also led to more of an effort to train more military personal to travel to the middle east and eradicate terrorism.