215,628 people
200 people
32people participated i
550 athletes participated in the first commonwealth games
The first Earth Day celebration in Indiana on April 22, 1970, saw participation from approximately 20,000 people. This event was part of a larger nationwide movement to raise awareness about environmental issues and promote conservation. Earth Day has since grown into a global event, with millions participating each year.
67 countries first participated in the International Geophysical Year in 1957-1958.
According to the Wikipedia article on Earth Day (related link below) approximately 20,000,000 Americans participated in the first Earth Day.
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8 teams participated in th opening world cup 1975
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