The Habsburg dynasty was a prominent European royal family that originated in the 11th century. They became one of the most influential dynasties in European history, ruling over vast territories, including the Holy Roman Empire, Austria, and Spain. The Habsburgs were known for their strategic marriages, which helped them acquire and maintain power across Europe. At its height, the Habsburg dynasty controlled a diverse range of regions, including parts of Italy, Hungary, and the Netherlands. The family played a significant role in European politics, culture, and religion, particularly during the Renaissance and Reformation periods. Their reign lasted until the early 20th century, ending with the fall of the Austro-Hungarian Empire after World War I.