The amazing 20th century By ikiax 1903 The Wright Brothers make the first flight 1905 Albert Einstein's Theory of Relativity https://www.thoughtco.com/einstein-proposes-his-theory-of-relativity-1779192 1914 World War I 1920 Women got the vote https://www.thoughtco.com/guide-to-womens-suffrage-3530480 1927 The first talking movie "The Jazz Singer" 1928 Alexander Fleming discovers penicillin https://www.thoughtco.com/alexander-fleming-discovers-penicillin-1779782 1939 Hitler's Nazis invaded Poland, World War II begins 1948 The doctrine of apartheid ("separateness" in Afrikaans) was made law in South Africa in 1948 https://www.thoughtco.com/apartheid-101-overview-43438 1951 Color TV was introduced 1957 The launch of the Soviet satellite, Sputnik https://www.thoughtco.com/history-of-satellites-4070932 1958 Lego toy bricks was introduced https://www.thoughtco.com/lego-toy-bricks-first-introduced-1779349 1964 America's Congress passes the Civil Rights Act 1969 Neil Armstrong became the first man to walk on the moon 1979 Margaret Thatcher became the first woman prime minister in UK 1979 Mother Teresa is awarded with the Nobel https://www.thoughtco.com/mother-teresa-1779852 1986 The deadliest nuclear accident occurred in Chernobyl, Ukraine https://www.thoughtco.com/chernobyl-nuclear-disaster-1779770 1989 The Berlin Wall fell and Germany reunited after 45 years of separation https://www.thoughtco.com/the-berlin-wall-28-year-history-1779495 1991 A Copper Age Man was found frozen in a glacier 1996 Dolly the sheep, the first cloned mammal, was born 1999 The euro made its debut as the European currency