Chairman Mao Zedong, left, and U.S. President Richard Nixon shake hands as they meet in China in Feb 1972. Nixon's visit marks the first U.S .presidential visit to the People's Republic of China. (Photo/china.com.cn)
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Chairman Mao Zedong, left, and U.S. President Richard Nixon shake hands as they meet in China in Feb 1972. Nixon's visit marks the first U.S .presidential visit to the People's Republic of China. (Photo/china.com.cn)
