These days, international travel has become much easier and cheaper than it was in the past. There could be one main reason behind this trend, and I believe it has a positive impact on people despite some disadvantages.
One key reason for making international travel cheaper is that, modern technology has improved vehicles. That is to say, new technologies have made air travel faster and more affordable. For example, many airlines provide travelers with cheap tickets. As a result, many people were able to travel abroad without spending too much money. If it were not for modern transportation, people could not easily travel to foreign countries. Given that, international travel has become affordable for more people.
However, international travel can also create some problems. The worst thing is large amounts of tourists can damage the environment. For example, airplanes emit significant amounts of carbon emissions, while popular tourist destinations can be crowded. As a result, some natural and historical places may suffer from pollution. However, governments can reduce these problems by controlling tourism and encouraging environmentally friendly transportation.
In conclusion, while international travel can cause environmental problems and overcrowding, I believe that its advantages outweigh the disadvantages.