What cultural similarities did native peoples of the Western hemisphere share in the 1490s, and why?

Hunting, gathering, agriculture, and trading

Explanation:

Native people living in the Western Hemisphere in the 1490's shared various cultural similarities such as Hunting, gathering, agriculture, and trading. These are the main cultural similarities but not the complete list since other similarities also include drawings, weaving, bead work, songs, dances, and religious ceremonies.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.  

human impact on coral reefs is significant. coral reefs are dying around the world. damaging activities include coral mining, pollution