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| 1866, Feb. 23 |
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| Cuza was kidnapped and forced to abdicate by a conspiracy of Conservatives and Liberals who desired a foreign prince. The assembly at once offered the position to the count of Flanders, son of Leopold II of Belgium, who declined. | 1 |
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| April 14 |
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| The provisional government (with the secret approval of Napoleon III and Bismarck) proclaimed Prince Charles of Hohenzollern-Sigmaringen. A plebiscite approved of the action. | 2 |
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| May 22 |
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| Charles arrived in Bucharest, having crossed Austria in disguise. | 3 |
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| July |
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| Charles introduced a new constitution, based upon the Belgian charter of 1831 (liberal, but not democratic). | 4 |
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| Oct. 24 |
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| The sultan recognized Charles and the powers followed suit. | 5 |
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