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EarlierCopernicus De Revolutionibus Published1543 AD
LaterRöntgen Discovers X-Rays1895 AD
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The Congress of Vienna of 1814–1815 was a series of international diplomatic meetings to discuss and agree upon a possible new layout of the European political and constitutional order after the downfall of the French Emperor Napoleon Bonaparte. Participants were representatives of all European powers (other than the Ottoman Empire) and other stakeholders. The Congress was chaired by Austrian statesman Klemens von Metternich (Duke Metternich) and was held in Vienna from September 1814 to June 1815.

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Key figuresKlemens von Metternich
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