A PhD is the abbreviation for Doctor of philosophy. This degree is a post graduate program delivered to a high level student researcher who has done deep research in a specific field or subject.
Education in the United States is mainly provided by the public sector, with control and funding coming from three levels: state, local, and federal, in that order. The common requirements to study at a higher education level in United States will include your admissions essay (also known as the statement of purpose or personal statement), transcript of records, recommendation/reference letters, language tests
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