Pope Leo X was the son of Lorenzo de Medici, also called Lorenzo the Magnificent, who was the de facto head of the Florentine Republic from 1469 till 1492.
The Agricultural Revolution was a time of transition between hunting and gathering to the domestication of plants and animals, so there were no "cities" in the traditional sense. The benefit of farming, however, was that you could raise enough crops to feed your family and to trade and/or sell.
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D. An embargo on oil and weapons for all warring nations
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Trotsky helped organize the failed Russian Revolution of 1905, after which he was again arrested and exiled to Siberia. As chairman of the Petrograd Soviet, he played a key role in the October Revolution of November 1917 which overthrew the new Provisional Government.
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