Which event does this 1783 photograph show?

A treaty in Paris formally ends the American Revolutionary War (1783). The Treaty of Paris recognised American independence and set the new nation's borders. The painting was abandoned unfinished because the British delegation refused to sit for it.

Which event does this 1658 photograph show?

Oliver Cromwell dies, and the English republic dies with him (1658). Cromwell died on the anniversary of two of his greatest victories, Dunbar and Worcester. His son Richard proved unable to hold the Protectorate together and the monarchy was restored within two years.

Which event does this 1967 photograph show?

An entire country switches which side of the road it drives on (1967). On Dagen H, Sweden switched from driving on the left to the right at 5am. Some 360,000 road signs were changed overnight, and despite 83 per cent of Swedes opposing the change, the day passed with no fatalities.

Which event does this 1976 photograph show?

A lander touches down on Mars and starts sending back pictures (1976). Viking 2 landed at Utopia Planitia and operated for over three years. It returned the first images showing water frost forming on the Martian surface, visible as the white patches between the rocks.

Which event does this 1928 photograph show?

Fleming returns from holiday to find a mould has killed his bacteria (1928). Alexander Fleming came back to his untidy lab at St Mary's and noticed a contaminated culture plate where mould had wiped out the staphylococci around it. That accident became penicillin, and antibiotics with it.

What happened on September 3? the Treaty of Paris, Cromwell and 3 more

What happened on September 3

All 5 specimens from this file, spanning 1658 to 1976, with the story behind each photograph.

Reveal the full answer key

History · 1783

A treaty in Paris formally ends the American Revolutionary War

The Treaty of Paris recognised American independence and set the new nation's borders. The painting was abandoned unfinished because the British delegation refused to sit for it.
Politics · 1658

Oliver Cromwell dies, and the English republic dies with him

Cromwell died on the anniversary of two of his greatest victories, Dunbar and Worcester. His son Richard proved unable to hold the Protectorate together and the monarchy was restored within two years.
Culture · 1967

An entire country switches which side of the road it drives on

On Dagen H, Sweden switched from driving on the left to the right at 5am. Some 360,000 road signs were changed overnight, and despite 83 per cent of Swedes opposing the change, the day passed with no fatalities.
Space · 1976

A lander touches down on Mars and starts sending back pictures

Viking 2 landed at Utopia Planitia and operated for over three years. It returned the first images showing water frost forming on the Martian surface, visible as the white patches between the rocks.
Science · 1928

Fleming returns from holiday to find a mould has killed his bacteria

Alexander Fleming came back to his untidy lab at St Mary's and noticed a contaminated culture plate where mould had wiped out the staphylococci around it. That accident became penicillin, and antibiotics with it.