The number of business and leisure travelers has declined significantly in the years since the horrific incident. Travel has become increasingly frustrating due to increased duration and the inconvenience of additional security measures put in place to combat future terrorist attacks. However, over time, confidence in airline safety and safe travel has slowly returned, leading to an increase in travel. In conclusion, travel and tourism can have a very significant impact on an individual and is important in a person's understanding of the world in which they live. A comprehensive and healthy understanding of the world cannot be achieved by staying in one part of the world all your life. Without traveling and being exposed to other cultures, one cannot truly understand who they are and where they are..