Who was the first president who was a natural born citizen of the us

Martin Van Buren, is the right answer.

Explanation:

The eighth President of the United States, Martin Van Buren, was the first-ever U.S. born citizen.Before him, all the presidents of the United States were British subjects. He was a Democrat who served the post of the U.S. President in the years between 1837 to 1841.During his tenure, the United States underwent severe economic depression.