The brinkmanship which is one of the strategies of the United States failed to prevent the Vietnam war because when American founded attacks, the Vietnamese fought back along using the guerrilla strategy and these Vietnamese think that all men are created equal.
In Africa, a number of specialized occupations developed ,highly skilled metal smiths developed more efficient tool that increase agricultural productivity. they also produce improved weapons ,which became important in the expansion of kingdoms.
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My friend Jordan made a Prezi presentation on this: https://prezi.com/cnlaggu0ybjb/comparison-of-the-olmec-and-chav/
All of the following describe relative location except answer B.).
Latitude and Longitude coordinates give an absolute location at a specific spot.
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