Jonas Salk<span> </span><span>was an American </span>medical researcher<span> and </span>virologist<span>. He discovered and developed one of the first successful </span>polio vaccines in the 1950's.
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present day Utah, Nevada, and most of Arizona
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The Hacienda owners (Hacendados) in order to maintain constant exploit over their workers by maintaining a strict hierarchy in which the workers were practically feudal serfs. The way that they oppressed villagers and indigenous peoples was by forcing them off their land and leaving them with no other option but to work for them, whereafter they were exposed to harsh and underpaid hard labor.
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I would say london data would represent the x-axis
