Answer:
the Triple Entente
Explanation:
The Triple Entente was a pact signed in 1907, consisting of the Franco-Russian alliance, the Franco-British Entente Cordiale of 1904 and the Russian-British agreement of 1907. The French Third Republic undertook to enter the war against the German Empire if it attacked the Russian Empire, and, on the other hand, the United Kingdom only promised to provide diplomatic support.
The new world power, Germany, ruled by Wilhelm II of Germany, in 1890 got that no more than three powers that had significant differences between them, France, the United Kingdom of Great Britain and Ireland and the Russian Empire, will approach and end by coalescing as the Nationalist Major Allied to face the Triple Alliance of the German Empire, Austro-Hungarian Empire and the Kingdom of Italy.
In 1907, there is still no alliance in the strict sense. The British, in particular, tried to stay free of obligations. However, the successive crises that marked the path to the First World War were making the Entente more and more solid.
The definitive crisis of the summer of 1914 demonstrated the functioning of the alliance by ending up involving the three signatory powers in the conflict.