Alexander I of Yugoslavia vs George IV of the United Kingdom

During a parliamentary session in Belgrade, Montenegrin deputy Puni

Alexander I abolished the Vidovdan Constitution, dissolved parliament, and established a royal dictatorship. He renamed the country the Kingdom of Yugoslavia and sought to centralize power, suppress ethnic nationalism, and impose a unified Yugoslav identity, which intensified ethnic tensions.

Alexander I officially renamed the Kingdom of Serbs, Croats, and Slovenes to the Kingdom of Yugoslavia on October 3, 1929. This was part of his effort to promote national unity and centralize the state, but it failed to resolve deep ethnic divisions.

Alexander I was assassinated in Marseille, France, by Vlado Chernozemski, a member of the Internal Macedonian Revolutionary Organization. The assassination, which also killed French Foreign Minister Louis Barthou, destabilized the Balkan region and contributed to rising tensions before World War II.

When George III became temporarily insane, the Prince of Wales (future George IV) sought to become regent. The crisis ended when the king recovered, but it established a precedent for parliamentary control over regency.

Following George III's final mental collapse, the Prince of Wales was formally appointed Prince Regent under the Regency Act 1811. He exercised royal powers for nine years while his father lived in seclusion.

As Prince Regent, George IV commissioned John Nash to design Regent Street, Regent's Park, and the Royal Pavilion in Brighton. His patronage defined the architectural and cultural style of the Regency period.

Upon George III's death, the Prince Regent became King George IV. His accession was marred by his attempt to divorce Queen Caroline, leading to a public scandal and the Pains and Penalties Bill of 1820.

George IV became the first British monarch to visit Ireland since the Acts of Union. The visit aimed to promote loyalty but was overshadowed by the ongoing Catholic Emancipation debate.

George IV reluctantly signed the Roman Catholic Relief Act 1829, granting Catholic Emancipation. He had opposed the measure but yielded to Prime Minister Wellington's threat of resignation.