Which of the following best defines the Triple Alliance?

The Triple Alliance was a military alliance established in 1882 primarily to counter the perceived threat from the Triple Entente, which consisted of France, Russia, and Britain. The members of the Triple Alliance were Germany, Austria-Hungary, and Italy. This alliance was rooted in mutual interests: Germany sought to strengthen its position in Europe, Austria-Hungary sought support against Slavic nationalism, and Italy aimed for territorial expansion and security against France and its enemies.

This alliance played a significant role in the complexities of European diplomacy leading up to World War I, as it created a network of obligations, potentially pulling member states into conflict due to alliances. The collaboration, however, was not without its tensions, particularly as Italy would later diverge from the alliance during the war.

The other options reference different combinations of countries that do not align with the historical context of the Triple Alliance. The combination mentioned in the correct choice captures the essence of the alliance's members, solidifying its historical significance in early 20th-century geopolitics.