May 1 in history: Great Britain issues first adhesive postage stamp and more

From issuing of world's first adhesive postage stamp to nationalization of coal mines in India, we've got it all covered!

Let's dive into today's history.

 

1840

Great Britain issues world's first adhesive postage stamp 'Penny Black'

(Photograph:WION)

1889

International Socialist Congress observes first May Day

(Photograph:WION)

1961

Fidel Castro declares Cuba a socialist nation and abolishes elections

(Photograph:WION)

1972

Nationalization of coal mines in India

(Photograph:WION)

2009

Sweden legalises same-sex marriage

(Photograph:WION)

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