Answer:
Completing the question, we can say:
Adaptation is often necessitated due to: differences across countries in language, culture, economic conditions, and other factors.
Explanation:
Adaptation could be defined as the ability of an individual to adjust to: a new environment, staying with people from a different background, and generally new ways of doing things.
Therefore if people from different countries, come together, adaptation has to take place as each person tends to adjust themselves to each other.
