what was the relationship between the united states and china at the beginning of the nixon presidency

During the presidency of Richard Nixon, the United States acknowledged the Communist government of the "People's Republic of China". He was the "37th President of United States" and served his country for five years (from "1969 to 1974").

In 1972, Nixon visited the China to lead the diplomatic relationship between "United States and China". He gave ordered to create Environmental Protection Agency. He is the only president in the American Presidency history who resigned from his post.