Answer:
introducing zero as a placeholder
Explanation:
The Maya were one of the earliest ancient nations to employ the concept of zero, allowing them to write and compute vast sums.
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Answer:
7. Is B.......... Because Freetown is the capital and largest city of Sierra Leone. It is a major port city on the Atlantic Ocean and is located in the Western Area of the country. Freetown is Sierra Leone's major urban, economic, financial, cultural, educational and political centre, as it is the seat of the Government of Sierra Leone.
8. F
9. v
Explanation:
A is the answer, expansionism
The Cold War was one of the events that marked the end of the terrifying Soviet Union from Russia
