President nixon took a bold diplomatic step in early 1972 when he
went to vienna
declared the vietnam war over
met with chinese leaders in beijing
signed the glasgow accords

C, met with Chinese leaders in Beijing

Explanation:

Richard Nixon was the first U.S. president to visit China. The two countries had no communication for the past 25 years and his visit was the first step to normalize the situation. The visit lasted for seven days and its other purpose was to gain more influence over China, as it was feared the Soviet Union had more leverage there.

The American people saw pictures of China on TV for the first time for more than two decades. Although the outcome of this visit is still controversial, it definitely put a wedge between China and the Soviet Union and opened China to the world.

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