Final answer:
The largest migration corridors exist due to individuals leaving developing countries for countries with a strong economy.
Step-by-step explanation:
The largest migration corridors exist over what global scale migration trend?
The global scale migration trend that is associated with the largest migration corridors is individuals leaving developing countries for countries with a strong economy. This phenomenon, known as economic migration, occurs when individuals from less developed countries migrate to more developed countries in search of better economic opportunities and a higher standard of living.
An example of this migration trend is the movement of individuals from countries in Africa or Asia to countries in Europe or North America.
Learn more about global scale migration trend