Which transportation vehicles has changed people`s lives? As opposite to cars and bicycles, airplanes changed human lives in a most radical way While automobiles in most cases link people living within the same country, a transcontinental aircraft is capable of reaching most remote locations on earth within days and even hours thereby connecting people and carrying goods and ideas Fast and inexpensive air delivery system benefits all aspects of social well-being, from industrial needs to emergency and rescue operations Moreover, modern tourism based primarily on air travel makes it possible to visit virtually any country or even countries within regular vacation time and, therefore, serves the most noble purpose of establishing mutual understanding and trust between nations On the other hand, military airfare also drastically changed both military doctrines of the nations with modern air forces and battlefield tactics by significantly reducing number of military and civilian casualties in armed conflicts, increasing intensity and effectiveness of assault on enemy troops thereby reducing total duration of a conflict To summarize, aircraft revolutionized modern life in many areas in most cases serving to the benefit of humanity