FederationA federation (also known as a federal state) is a political entity characterized by a union of partially self-governing provinces, states, or other regions under a central federal government (federalism). In a federation, the self-governing status of the component states, as well as the division of power between them and the central government, is constitutionally entrenched and may not be altered by a unilateral decision, neither by the component states nor the federal political body.
MonarchyA monarchy is a form of government in which a person, the monarch, is head of state for life or until abdication. The political legitimacy and authority of the monarch may vary from restricted and largely symbolic (constitutional monarchy), to fully autocratic (absolute monarchy), and can span across executive, legislative, and judicial domains. The succession of monarchs in many cases has been hereditical, often building dynastic periods. However, elective and self-proclaimed monarchies have also been established throughout history.
City-stateA city-state is an independent sovereign city which serves as the center of political, economic, and cultural life over its contiguous territory. They have existed in many parts of the world since the dawn of history, including ancient poleis such as Athens, Sparta, Carthage and Rome, and the Italian city-states during the Middle Ages and Renaissance, such as Florence, Venice, Genoa and Milan. With the rise of nation states worldwide, there remains some disagreement on the number of modern city-states that still exist; Singapore, Monaco and Vatican City are the candidates most commonly discussed.
Kingdom of YugoslaviaThe Kingdom of Yugoslavia (Краљевина Југославија; Kraljevina Jugoslavija) was a state in Southeast and Central Europe that existed from 1918 until 1941. From 1918 to 1929, it was officially called the Kingdom of Serbs, Croats, and Slovenes (Краљевина Срба, Хрвата и Словенаца; Kraljevina Srbov, Hrvatov in Slovencev), but the term "Yugoslavia" (Land of the South Slavs) was its colloquial name due to its origins. The official name of the state was changed to "Kingdom of Yugoslavia" by King Alexander I on 3 October 1929.
YugoslaviaYugoslavia (ˌjuːɡoʊˈslɑːviə; Југославија juɡǒslaːʋija; Jugoslavija juɡɔˈslàːʋija; Југославија juɡɔˈsɫavija; Land of the South Slavs) was a country in Southeast and Central Europe which existed from 1918 to 1992. It came into existence in 1918 following World War I, under the name of the Kingdom of Serbs, Croats and Slovenes from the merger of the Kingdom of Serbia with the provisional State of Slovenes, Croats and Serbs (which was formed from territories of the former Austria-Hungary), and constituted the first union of South Slavic peoples as a sovereign state, following centuries of foreign rule over the region under the Ottoman Empire and Austria-Hungary.
