Most accurate would be the second choice as it addresses the US Goverment. If I'm incorrect please do let me know :) I'd look for a second source of this information though.
<span>According to Bentley and Ziegler, one way the Spanish changed the Americas was that they developed a capital city that became a beacon of western values. </span>
<span>The California Gold Rush brought in people from all over the world, which resulted in cultural diffusion among the settlers there.
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<span>c) He was a former slave himself</span>