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From 1770–1818, Alexandre Pétion was the leader. From 1776–1850, Jean-Pierre Boyer was the leader.

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List of heads of state of Haiti - Wikipedia

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Between 1806 and 1820 Haiti was divided between the northern , renamed in 1811, and the southern . Between 1822 and 1844 the reunified Republic of Haiti ruled over the entire island of Hispaniola, during the period known as the unification of Hispaniola .

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From 1810-1861, the leaders of Italy was Camillo Benso and Conte di Cavour. From 1861-1878, the Kind was Victor Emmanual ll.

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After a protracted campaign of unification that encompassed several decades and a series of conflicts, the Kingdom of Italy was proclaimed on March 17, 1861, by a parliament based in Turin. This new Italian monarchy lasted for less than 90 years, ousted by a referendum in 1946 when a slim majority voted for the creation of a republic. The monarchy had been badly damaged by its association with Benito Mussolini's fascists and by failure in World War II.

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Look Back at the Modern Monarchs and Past Presidents of Italy

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After Italy's unification, the monarchy lasted for less than 90 years before giving way to a republic. Learn about Italian rulers throughout history.

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The leader in Germany from March 1871 to March 1890 was Otto Von Bismark.

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States of the German Empire when the Duchy of Saxe-Lauenburg was merged into the Kingdom of Prussia on 1 July 1876

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The Haitian Revolution was a bunch of conflicts between 1791 and 1804. The African Descendants overthrew the French Regime, the Africans had been enslaved by the French.

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22nd August 1791: Start of the Haitian Revolution in the French colony of Saint-Domingue

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The Italian Unification was a political and social movement that made different states of the European Peninsula stronger and made into a single state of the Kingdom of Italy during the 1800s.

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During the 1800s, Prussia unified Germany. The Minister President of Prussia, held three short, decisive wars against Denmark, Austria, and France, aligning the smaller German states behind Prussia in its defeat of France. In 1871 he unified Germany into a nation-state. This formed the German Empire.