The United States bought some 45,000 sq mi of land from Mexico in the Gadsden Purchase.
Sun Yat-sen was elected the first president of the Republic of China.
The Union of the Soviet Socialist Republics was established through the confederation of Russia, Byelorussia, Ukraine, and Transcaucasian Federation.
California's first freeway opened.
President Nixon halted the heavy bombing on North Vietnam.
Israel and the Vatican signed an agreement of mutual recognition to put an end to Jewish-Christian hostilities.