Napoleon
Napoleon Bonaparte ( ; ] ; 15 August 17695 May 1821), born Napoleone di Buonaparte (] ), was a French statesman and military leader who became famous as an artillery commander during the French Revolution. He led many successful campaigns during the French Revolutionary Wars and was Emperor of the French as Napoleon I from 1804 until 1814 and again briefly in 1815 during the Hundred Days. Napoleon dominated European and global affairs for more than a decade while leading France against a series of coalitions during the Napoleonic Wars. He won many of these wars and a vast majority of his battles, building a large empire that ruled over much of continental Europe before its final collapse in 1815. He is considered one of the greatest commanders in history, and his wars and campaigns are studied at military schools worldwide. Napoleon's political and cultural legacy has made him one of the most celebrated and controversial leaders in human history.
Napoleon
He was born Napoleone di Buonaparte in Corsica to a relatively modest Italian family from minor nobility. He was serving as an artillery officer in the French army when the French Revolution erupted in 1789. He rapidly rose through the ranks of the military, seizing the new opportunities presented by the Revolution and becoming a general at age 24. The French Directory eventually gave him command of the Army of Italy after he suppressed the 13 Vendémiaire revolt against the government by royalist insurgents. At age 26, he began his first military campaign against the Austrians and the Italian monarchs aligned with the Habsburgs—winning virtually every battle, conquering the Italian Peninsula in a year while establishing "sister republics" with local support, and becoming a war hero in France. In 1798, he led a military expedition to Egypt that served as a springboard to political power. He orchestrated a coup in November 1799 and became First Consul of the Republic. After the Peace of Amiens in 1802, Napoleon turned his attention to France's colonies. He sold the Louisiana Territory to the United States, and he attempted to restore slavery to the French Caribbean colonies. However, while he was successful in restoring slavery in the eastern Caribbean, Napoleon failed in his attempts to subdue Saint-Domingue, and the colony that France once proudly boasted of as the "Pearl of the Antilles" became independent as Haiti in 1804. Napoleon's ambition and public approval inspired him to go further, and he became the first Emperor of the French in 1804. Intractable differences with the British meant that the French were facing a Third Coalition by 1805. Napoleon shattered this coalition with decisive victories in the Ulm Campaign and a historic triumph over the Russian Empire and Austrian Empire at the Battle of Austerlitz which led to the dissolution of the Holy Roman Empire. Napoleon formed the Franco-Persian alliance and wanted to re-establish the Franco-Indian alliances with the Muslim Indian emperor Tipu Sultan by providing a French-trained army during the Anglo-Mysore Wars, with the continuous aim of having an eventual open way to attack the British in India. In 1806, the Fourth Coalition took up arms against him because Prussia became worried about growing French influence on the continent. Napoleon quickly defeated Prussia at the battles of Jena and Auerstedt, then marched his "Grande Armée" deep into Eastern Europe and annihilated the Russians in June 1807 at the Battle of Friedland. France then forced the defeated nations of the Fourth Coalition to sign the Treaties of Tilsit in July 1807, bringing an uneasy peace to the continent. Tilsit signified the high-water mark of the French Empire. In 1809, the Austrians and the British challenged the French again during the War of the Fifth Coalition, but Napoleon solidified his grip over Europe after triumphing at the Battle of Wagram in July.

Question: When did the French Senate declare Napoleon Emperor?
Answer: 1804