The PhD can vary depending on the institution and country in which it is awarded. Most scholars pursue a PhD because of strong motivation to contribute to the academic community as well as true curiosity about their chosen field of study.
The United States of America is located on the continent of North America. It is the third largest country by size in the world. It has a relatively short history compared to other world nations, has one of the world's largest economies, and has one of the world's most diverse populations.
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