The correct answer is: C. Labour Day
1 May is observed as Labour Day or International Workers’ Day in many countries around the world. It is a day to celebrate the achievements of the labour movement and to promote workers’ rights.
The first Labour Day was celebrated in 1886 in Chicago, Illinois, United States. The day was chosen because it was the anniversary of the Haymarket Affair, a violent clash between workers and police that resulted in the deaths of several people.
Labour Day is now
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