The empire known for its military and territorial expansion that eventually fell in the early 20th century was the Ottoman Empire. At its height, it spanned three continents, encompassing parts of Southeast Europe, Western Asia, and North Africa. However, by the late 19th and early 20th centuries, the empire faced internal strife, nationalistic movements, and external pressures from European powers. The World War I played a critical role in its demise, culminating in the empire's dissolution in 1922 and the establishment of modern Turkey. The fall of the Ottoman Empire marked a significant transformation in geopolitical dynamics and continues to influence the region today.