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What was the barter system?

European expansion into africa left native regimes intact but had a strong impact on local societies what does this mean

The term globalization is best defined as: a. a reduction in the political and military power of imperial countries over their colonies. b. an increasing interaction among citizens and businesses of countries around the world. c. the spread of philosophies based on the right of all nations to political independence. d. the establishment of international laws protecting all people's human and civil rights.

How does the pyramid of giza include art, science, math, or a need for infrastructure?