The direct cause of WWI was the assassination of Archduke Franz Ferdinand at Sarajevo on 28 June 1914. However historians feel that a number of factors contributed to the rivalry between the Great powers that allowed war on such a wide-scale to break out.
John D. Rockefeller vertically integrate his monopoly in 1882 as D. He purchased iron mines around the country to add to his business.
<h3>What is monopoly?</h3>
It should be noted that monopoly simply means a market structure that is characterized by a single seller of a good.
In this case, John D. Rockefeller vertically integrate his monopoly in 1882 as he purchased iron mines around the country to add to his business.
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Need to see the map, but I believe its in Atlanta
