May 1 in history: Great Britain issues first adhesive postage stamp and more
Authored By Gandharv Walia
Published: May 01, 2021, 02:19 IST | Updated: May 01, 2021, 02:19 IST
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1840
Great Britain issues world's first adhesive postage stamp 'Penny Black'
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1889
International Socialist Congress observes first May Day
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1961
Fidel Castro declares Cuba a socialist nation and abolishes elections
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1972
Nationalization of coal mines in India
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2009
Sweden legalises same-sex marriage
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