Louis II, Prince of Monaco
On 26 June 1922, Prince Albert I died in Paris. Louis Grimaldi ascended to the throne as Louis II, Prince of Monaco. While his reign never achieved the grandeur of his father, Louis II left an indelible imprint on the tiny principality. In 1924 the Monaco Football Club was formed and in 1929, the first Grand Prix of Monaco automobile race was held, won by Charles Grover (aka "Williams") driving a Bugatti painted in what would become the famous British racing green color. He collected artefacts belonging to Napoleon I which are now assembled and displayed in the Napoleon Museum attached to the Royal Palace in Monte Carlo.
Succession to the Monegasque throne
This possibility had two implications, namely that "a") that the throne might fall vacant and Monaco might officially become a protectorate of France should Prince Albert inherit the crown and then die without fathering or adopting a legitimate heir or "b") Prince Albert might adopt an unrelated person as his heir, thereby breaking the genealogical line of the House of Grimaldi. In 2002, changes were made to the Constitution of Monaco which eliminated that concern by excluding adopted children from the line of succession and providing that, if the sovereign has no legitimate child, the crown passes to one of the dynastic siblings of the sovereign or, if not living, to one of their legitimate descendants.