The House of Habsburg was a prominent royal family in Europe, known for its influence from the late Middle Ages to the early 20th century. Originating in Switzerland, the family expanded its power through strategic marriages, acquiring vast territories including Austria, Spain, and parts of Italy and Germany. The Habsburgs played a crucial role in European politics, often providing Holy Roman Emperors and Spanish kings. Their motto, "Bella gerant alii, tu felix Austria nube," reflects their strategy of using marriage to secure alliances. The dynasty's decline began in the 19th century, culminating in the fall of the Austro-Hungarian Empire after World War I.