1973-Oct-20 Queen Elizabeth II opened the Sydney Opera House
1993-Jan-01 Czechoslovakia was divided into two independent states
1997-Jul-01 The United Kingdom returned Hong Kong to the People's Republic of China
1999-Jan-01 The Euro became the official currency in 11 European countries
1932-Dec-27 Radio City Music Hall opened in New York City
1945-Oct-24 The United Nations was officially established
2018-Jun-18 WHO officially announced it will categorize gaming addiction as a mental health condition
1996-Mar-17 Sri Lanka won the Cricket World Cup
1921-Jul-01 The Communist Party of China (CPC) was formed, and Chen Duxiu was elected its leader
1994-May-10 Nelson Mandela sworn in as the first black president of South Africa
2002-Jan-02 The Legislative Assembly appointed Eduardo Duhalde as interim President of Argentina
1903-Dec-17 Innovation of the aeroplane
1924-Jan-25 The first Winter Olympic Games opened in Chamonix, France
