The 1904 United States presidential election was the 30th quadrennial presidential election, held on Tuesday, November 8, 1904. Incumbent Republican President Theodore Roosevelt defeated the Democratic nominee, Alton B. Parker. Roosevelt's victory made him the first president to win a term in his own right after having ascended to the presidency upon the death of his predecessor, William McKinley. Idk if that helps
I think the answer is City dwelers
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OPEC can be observed as a trade barrier because it could hypothetically completely exclude a country from trading with countries that produce oil and this would make life much harder for those countries. For example, OPEC introduced an embargo on the US in 70s and there was a huge spike in gas prices and a shortage of fuel.
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