The term "Dual Monarchy" refers to a political system where two distinct kingdoms are ruled by a single monarch. A notable example is the Austro-Hungarian Empire, which existed from 1867 to 1918. In this arrangement, Austria and Hungary maintained separate governments and laws but shared a common ruler, the Emperor of Austria and the King of Hungary. This system aimed to balance the interests of both nations while promoting unity. Under the Dual Monarchy, each region had its own parliament and administrative structures, allowing for a degree of autonomy. However, the arrangement also led to tensions, as different ethnic groups sought greater independence. Ultimately, the Dual Monarchy faced challenges that contributed to its dissolution after World War I.