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Technology, science, inventions, and reinventions have progressed at an accelerated rate during the hundred years of the 20th century, more so than any other century.
We began the 20th century with the infancy of aeroplanes, automobiles, and radio. There were many technologies that helped define the next one hundred years, the aeroplane, automobiles, the radio, atomic bomb to the microwave oven. Inventions like the escalator, disposable razor, the air conditioner and the vacuum cleaner. And Albert Einstein published the Theory of Relativity and made the equation famous, E=mc2. And we ended the 20th century with spaceships, computers, cellphones, and the wireless Internet.
What remarkable changes she must have seen during her lifetime.
Clara Mahr was born in the year of 1905 and in that year Theodore Roosevelt was the 26th president of the United States. Franklin D. Roosevelt marries his fifth cousin Eleanor Roosevelt.
The Wright brothers third aeroplane (Wright Flyer III) stayed in the air for 39 minutes.
1910 - Theodore Roosevelt became the first former president to ride in an airplane.
1915 - The RMS Lusitania is sunk on passage from New York to Britain by a German U-boat, killing 1,198.
1920 - Prohibition in the United States begins with the Eighteenth Amendment to The Constitution.
1926 - In New York City, the Warner Brother' Vitaphone system premiered with the movie Don Juan starring John Barrymore.
1930 - The first frozen foods of Clarence Birdseye go on sale in Springfield, Massachusetts.
- Jimmy Dewar invests Hostess Twinkies.
1935 - Amelia Earhart becomes the first person to fly solo from Hawaii to California.
1940 - California's first modern freeway, State Route 110, opens to traffic.
1941 - Attack on Pearl Harbor, thus drawing the U.S. into World War II
1945 - World War II ends.
1950 - The comic strip Peanuts by Charles M. Schulz is first published.
1955 - Ray Kroc opens his first McDonald's in Des Plaines Illinois.
1960 - Democratic U.S. Senator John F. Kennedy was elected president.
1963 - President John F. Kennedy assassination
1969 - Moon Landing - Neil Armstrong takes the first historic steps by a human on the surface.
1972 - The first Boston Marathon in which women are officially allowed to compete.
1975 - End of Vietnam War
1983 - The first woman in space,Sally Ride on the Challenger
1992 - After 30 years Johnny Carson retired as host of NBC's The Tonight Show.
1996 - One of the worst blizzards in American history hits the eastern states, dropping 20 inches of snow, has gust winds of 50 mph and snow drifts up to 8 feet.
2000 - The New York Yankees defeated the New York Mets in game 5 to win their 26th World Series title.
2001 - 9/11
2003 - Space Shuttle Columbia disintegrated as it reentered the atmosphere
2006 - STS-121 Space Shuttle Discovery is launched to the International Space Station. The Discovery returns safely on July 17, it is the second "return to flight" mission after the Space Shuttle Columbia disaster