September 3 in history: First official Polo tournament, Viking 2 lands on Mars and more

From the first official polo tournament to the landing of Viking 2 lands on Mars, we've got it all covered!

Let's dive into today's history.

1875

First official Polo tournament is played in Argentina.

(Photograph:WION)

1939

World War II: Britain and France declare war on Germany.

(Photograph:WION)

1967

Sweden switches to driving on right-hand side of road.

(Photograph:WION)

1976

NASA's robotic spacecraft Viking 2 lands on Mars.

(Photograph:WION)

2012

Griselda Blanco, known as Godmother of Cocaine, killed in Medellín, Colombia.

(Photograph:WION)

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