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Discovery of the remains of Lucy, the most famous fossil in history 

The mathematical four-colour theorem is proved

Alamy Stock Photo
The first joint US-Soviet space mission takes place

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Louise Brown is born, history’s first test-tube baby (by in vitro fertilisation)

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The first personal computers are launched: Apple II
and Commodore

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The Pioneer 10 probe reaches Jupiter and sends back the first images of the planet

1973    1974    1975    1976    1977    1978   

Synchronise each of the following milestones with the year in which it occurred:
4. La mayoría de los metales preciosos se destina a joyas
Study this gallery of faces. Then try to recognise all the faces that are repeated in the second gallery (and identify the ones that are not).
Let's synchronise these events
AÑO