More and more people today are choosing to travel internationally. This positive development is mainly because of a rise in middle class income coupled with advances in aviation.
People today can afford to travel as it has become more convenient. The last half century has seen wages in both developed and developing companies climb with the concomitant expansion of the global middle class. Workers have the disposable income to travel that they lacked in the past. This has been complemented with safer airplanes so individuals are not afraid to fly. Airfares have also become cheaper as companies like Boeing produce more efficient planes, competition intensifies between competing airlines, and the supply more than meets demand for flights. These factors combined have spawned a golden age of international travel.
Looking at the opportunity in perspective, it is hard to see the advent of international travel as anything less than one of mankind’s greatest achievements. For the entirety of human history, most people lived and died near to where they were born. Anyone who wanted to travel to another country had to possess enourmous wealth, time, and courage. Today, the average employee can save up and travel to see the wonders of the Rennaissance in Southern Europe, the vast monuments to history and modernity in China, or explore any other corner of Earth that has piqued their interest. This is an unprecedented opportunity unavailable to past generations.
In conclusion, international travel is a byproduct of the modern age and we should all be grateful for its possibility. There are clear environmental drawbacks but those should not blind people to its benefits taken as a whole. 
More and more  
people
  today
 are choosing to  
travel
  internationally
. This  
positive
 development is  
mainly
  because
 of a rise in middle  
class
 income coupled with advances in aviation. 
People
  today
 can afford to  
travel
 as it has become more convenient. The last half century has  
seen
 wages in both developed and developing  
companies
 climb with the concomitant expansion of the global middle  
class
. Workers have the disposable income to  
travel
 that they lacked in the past. This has  
been complemented
 with safer airplanes  
so
 individuals are not afraid to  
fly
. Airfares have  
also
 become cheaper as  
companies
 like Boeing produce more efficient  
planes
, competition intensifies between competing airlines, and the supply more than meets demand for flights. These factors combined have spawned a golden age of international travel.
Looking at the opportunity in perspective, it is  
hard
 to  
see
 the advent of international  
travel
 as anything less than one of mankind’s greatest achievements. For the entirety of human history, most  
people
  lived
 and  
died
 near to where they  
were born
. Anyone who wanted to  
travel
 to another country had to possess  
enourmous
 wealth, time, and courage.  
Today
, the average employee can save up and  
travel
 to  
see
 the wonders of the  
Rennaissance
 in Southern Europe, the vast monuments to history and modernity in China, or explore any other corner of Earth that has piqued their interest. This is an unprecedented opportunity unavailable to past generations. 
In conclusion
, international  
travel
 is a byproduct of the modern  
age and
 we should all be grateful for its possibility. There are  
clear
 environmental drawbacks  
but
 those should not blind  
people
 to its benefits taken as a whole.