Timeline March 1804

Events in March 1804 2

• 1804 Upper Louisiana Formally Transferred to the United States Ceremony in St. Louis completes the Louisiana Purchase handover On 9-10 March 1804, Spanish and French officials formally transferred Upper Louisiana to the United States in a ceremony at St. Louis, completing the process begun by the previous year's Louisiana Purchase treaty. The transfer opened the territory to American governance and westward expansion.
• 1804 Napoleonic Code Enacted France adopts its unified civil code under Napoleon On 21 March 1804, France promulgated the Napoleonic Code, a unified civil code replacing the patchwork of feudal and regional laws across the country. It enshrined legal equality, property rights, and secular civil marriage, and became a model for civil law systems across Europe and Latin America.