Respuesta :
because the colonies that portugal had colonized had run out of resources
Answer:
Because Africa began a nationalist movements.
Explanation:
The Portuguese were the last europeans to give up their African colonies.
Guinea did declare independence in 1973.
Cape verde islands declared national independence on 5 july 1975.
Sao tome on 12 of july of 1975 declared its independence and angola was added to this on november 1975.