In some countries like AmericanAmerica or Britain
... America is the country. Anything to do with America such as its people, colleges, economy etc. is American :)
In some countries like American or Britain, the population is a combination of peoplefrom all walks of life with different cultural background.
.... actually, you topic is focused on cultural diversity and it does not talk about different professions. "All walks of life" generally refers to people of different professions, which is not so important for this essay.
One of the first contributors to this issue is that in order to secure job opportunities with high-paid salaries, people from poor countries tend to move to developed countries.
....good point :)
That's why there is an increasing number of asian students seeking sholarships to pursue their passion at American universities.
...present this idea as an example;
For example, there are many Asian students who apply for scholarships in developed western countries in order to pursue their academic aspirations.