Which famous greek philosopher a student of plato emphasized the use of logic and ones senses in making scientific discoveries?

The famed greek philosopher you are looking for is Aristotle. He is the most well known student of Plato.

the mother countries succeed in doing that by using the colony's natural resources, facilities in a colony, they do not take good care of these facilities, causing them to fail. this has had negative and positive effects on the people of africa, they then governed through direct or indirect rule depending on the country.

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