The correct answer is Richard Nixon.
President Nixon visited the People's Republic of China in 1972.
It was the end of the 25-year-long no communication period between these two countries and the first step in normalizing relations. It was also done to gain more leverage over relations with the Soviet Union.
Nixon said that this visit 'changed the world' because it drove a wedge between the Soviet Union and China and shifted the relationship between the three countries during the Cold War.
This visit made it possible for Americans to see the first imagines of China for over two decades.
