Vietnam - January 1973, Vietnam cease-fire is called, American forces leave the country.
Triple Crown - Secretariat won Thoroughbred Racing's Triple Crown (the Kentucky Derby, Preakness Stakes, Belmont Stakes). Secretariat became the first champion to accomplish the feat since 1948 (Citation).
USA - Vice President Spiro Agnew resigns his office. In federal court of Baltimore, Maryland he pleads no contest to income tax evasion.
World at War - October 6, 1973 , Egypt and Syria attack Israel during Yom Kippur (a Jewish day of atonement). The Arab/Israeli conflict lasted three weeks and inflicted great damage to both sides. November 11, 1973 , the USA mediates an Egypt and Israel cease-fire agreement.
Notable Deaths -
Lyndon B. Johnson, 1908-1973, Democratic President of the USA who was responsible for the escalation of the Vietnam Conflict.
Paavo Nurmi, 1897-1973, one of the “Flying Finns”, Nurmi was the greatest middle and long distance runner of the 1920's. He won 9 Olympic Gold Medal from 1920 to 1928.