Was there a quinary sector in the 1950s?

No, the quinary sector is a term used to describe economic activities related to research, education, culture, and sports, and it developed later after the 1950s. In the 1950s, the economic sectors were commonly classified into primary (agriculture), secondary (industry), tertiary (services), and possibly quaternary (information and communications technology).

Which is the most disciplined army in world?

What does it mean to win the audie Murphy award?

History Exercises on the Mexican Revolution - With Answers
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History Exercises on the Mali Empire - with answer
Question 01 - ENEM 2017 - In the African empire of Mali, in the 14th century, Timbuktu was the center of an international trade where everything was traded - salt, ivory slaves, etc. There was also a large trade in books on history, medicine, astronomy and mathematics, in addition to a large concent
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