Prince Charles III of Monaco, born on December 8, 1818, was the ruler of the Principality of Monaco from 1856 until his death in 1889. He was a member of the Grimaldi family, which has ruled Monaco for over 700 years. His reign is noted for significant developments in the principality, including the establishment of the Monaco Casino and the expansion of the territory. During his rule, Charles III focused on modernizing Monaco's economy and infrastructure. He promoted tourism and sought to attract wealthy visitors, which helped transform Monaco into a glamorous destination. His efforts laid the groundwork for the principality's future prosperity and growth.