Final answer:
The Dreikaiserbund identified Western powers like France and Great Britain, along with revolutionary movements like socialism and nationalism, as common enemies to maintain stability and autocratic control in Europe.
Step-by-step explanation:
The Dreikaiserbund, or League of the Three Emperors, identified common enemies to foster cooperation and unity among the empires of Germany, Austria-Hungary, and Russia. The alliance mainly sought to counterbalance the influence of Western powers like France and Great Britain while trying to prevent the spread of revolutionary movements, such as socialism and nationalism, that threatened the stability and autocratic control of these empires. Within this context, common enemies would also include smaller nations seeking independence, which could destabilize the then-current power structures in Europe.