Important Events (from1901 to 2015)

May 20, 2016

May 20
• 1902 – Cuba gains independence from the United States. Tomás Estrada Palma becomes the country's first President.
• 1908 – Budi Utomo organization is founded in Dutch East Indies, beginning the Indonesian National Awakening.
• 1916 – The Saturday Evening Post publishes its first cover with a Norman Rockwell painting (Boy with Baby Carriage).
• 1920 – Montreal radio station XWA broadcasts the first regularly scheduled radio programming in North America.
• 1927 – Treaty of Jeddah: The United Kingdom recognizes the sovereignty of King Ibn Saud in the Kingdoms of Hejaz and Nejd, which later merge to become the Kingdom of Saudi Arabia.
• 1927 – At 07:52 Charles Lindbergh takes off from Roosevelt Field in Long Island, New York, on the world's first solo non-stop flight across the Atlantic Ocean. He touched down at Le Bourget Field in Paris at 22:22 the next day.
• 1932 – Amelia Earhart takes off from Newfoundland to begin the world's first solo nonstop flight across the Atlantic Ocean by a female pilot, landing in Ireland the next day.
• 1940 – The Holocaust: The first prisoners arrive at a new concentration camp at Auschwitz.
• 1941 – World War II: Battle of Crete: German paratroops invade Crete.
• 1948 – Chiang Kai-shek is elected as the first President of the Republic of China.
• 1949 – In the United States, the Armed Forces Security Agency, the predecessor to the National Security Agency, is established.
• 1956 – In Operation Redwing, the first United States airborne hydrogen bomb is dropped over Bikini Atoll in the Pacific Ocean.
• 1964 – Discovery of the cosmic microwave background radiation by Robert Woodrow Wilson and Arno Penzias.
• 1965 – PIA Flight 705, a Pakistan International Airlines Boeing 720-040B, crashes while descending to land at Cairo International Airport, killing 121 of the 127 passengers and crew.
• 1967 – The Popular Movement of the Revolution political party is established in the Democratic Republic of the Congo.
• 1969 – The Battle of Hamburger Hill in Vietnam ends.
• 1977 – The first flight of T-10, the first prototype of Su-27.
• 1980 – In a referendum in Quebec, the population rejects by a 60% vote the proposal from its government to move towards independence from Canada.
• 1983 – First publications of the discovery of the HIV virus that causes AIDS in the journal Science by Luc Montagnier.
• 1983 – Church Street bombing: A car bomb planted by Umkhonto we Sizwe explodes on Church Street in South Africa's capital, Pretoria, killing 19 people and injuring 217 others.
• 1985 – Radio Martí, part of the Voice of America service, begins broadcasting to Cuba.
• 1989 – The Chinese authorities declare martial law in the face of pro-democracy demonstrations, setting the scene for the Tiananmen Square massacre.
• 1990 – The first post-Communist presidential and parliamentary elections are held in Romania.
• 1996 – Civil rights: The Supreme Court of the United States rules in Romer v. Evans against a law that would have prevented any city, town or county in the state of Colorado from taking any legislative, executive, or judicial action to protect the rights of gays and lesbians.
• 2002 – The independence of East Timor is recognized by Portugal, formally ending 23 years of Indonesian rule and three years of provisional UN administration (Portugal itself is the former colonizer of East Timor until 1976).
• 2006 – A series of massive strikes begin involving nearly 1.8 million garment workers in Bangladesh.
• 2010 – A social media event is celebrated in response to the Muslim extremists' reaction to images of Mohammed.
• 2012 – At least 27 people are killed and 50 others injured when a 6.0-magnitude earthquake strikes northern Italy.
• 2013 – An EF5 tornado strikes the Oklahoma City suburb of Moore, killing 24 people and injuring 377 others.
• 2014 – More than 118 people are killed in two bombings in Jos, Nigeria.