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FIRST SYSTEM
Known as the League of the Three Emperors, this was an alliance between the Austro-Hungarian, German and Russian empires. -
SECOND SYSTEM
Bismarck made a bilateral agreement with Austria (Dual Alliance). Italy later joined the agreement, forming the Triple Alliance. Bismarck also revived the League of the Three Emperors.
Finished in 1882 -
THIRD SYSTEM
The German chancellor reinforced the Triple Alliance and signed the Reinsurance Treaty with the Russian tsar. This treaty guaranteed Russian neutrality in the event of an attack by France. Bismarck also signed the Mediterranean Agreements with Great Britain, Italy, Austria and Spain.