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In 1970 the United States started a war, it was a brief series of military operations conducted in eastern Cambodia in 1970 by South Vietnam and the United States as an extension of the Vietnam War. The objective of the campaign was to defeat approximately 40,000 of the "People's Army of Vietnam".

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1971 was a year that started on a Friday and an unusual amount of three solar eclipses in a single year, and they happened on February 25, July 22 and August 20. 1971 also had 2 lunar eclipses, happening on February 10, and August 6.

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1972 was a year starting on a Saturday and had the longest year ever, as two leap seconds were added during this 366-day year of 2 extra leap seconds for the year for the UTC Time zone.

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On February 28 1973, The legal federal voting age was changed from 21 years of age to 18 years old. But this change as already in effect in New South Wales, back in 1970 19th of July.

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In 1974 for sports was mainly the FIFA World Cup in Wst of Germany, which the hosts won the championship title, and as well as "The Rumble in the Jungle".

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1975 was the year considered as international women's year from the "United Nations" and a year starting on a wednesday.

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1976 was a leap year starting on a Thursday, and this was the year where the world's first commercially developed super computer was invented by Seymour Cray. And was also the company "Apple Computer" was created by Steve Jobs and  Steve Wozniak.

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1977 had NASA, named Enterprise, make its first test free flight from the back of a Boeing 747 Shuttle Carrier Aircraft. And the Golden Dragon massacre takes place in San Francisco, United States on September 4th.

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On the first day of the year, A Air India Flight, Boeing 747 passenger jet crashes off the coast of Bombay, killing 213, on that Sunday. And a Soviet air defense plane shoots down Korean Air Lines Flight 902, the plane makes an emergency landing onto a close by frozen lake.

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The 1979 Daytona 500 is televised on CBS, the first ever full airing of a 500 mile race on US television, Richard Petty wins after Cale Yarborough and Donnie Allison battle for first place on the final lap but then crash out, ending into a fist fight. Which gave NASCAR a wider audience.

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The first year of the "1980s". Where the Norwegian oil platform collapses in the North Sea, killing 123 of of a crew of 212 people aboard. And the eruption of Mount St. Helens volcano in Washington USA kills 57 people and causes $4.67billion AUD in damages.