<span>June 28, 1914, Sarajevo, Bosnia and Herzegovina</span>
Marginal costs. Keep in mind that marginal means on the edge of something, so the cost of producing one more unit would be on the edge. Hope this explanation helps.
<span>The federal government stopped accepting paper money for the purchase of land.
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The photograph above speaks about the Tianamen square incident in a way that it<span> shows the determination of the protestors and how the Chinese military overwhelmed them - as seen with the humongous tanks and one protestor bravely standing before them.</span>
