<P> In 1907, Britain and Russia signed the Anglo - Russian Convention of 1907 to end their rivalry in Central Asia, nicknamed The Great Game . </P> <P> In the last decade of the nineteenth century, Britain continued its policy of "splendid isolation", with its primary focus on defending its massive overseas empire . However, by the early 1900s, the German threat had increased dramatically, and in Britain thought it was in need of allies . For most of the 19th century, Britain had regarded France and Russia as its two most dangerous rivals, but with the growing threat of Germany, policy began to change for several reasons: </P> <Ol> <Li> France and Britain had signed five separate agreements regarding spheres of influence in North Africa in 1904, the Entente cordiale . The Tangier Crisis later encouraged co-operation between the two countries from their mutual fear of apparent German expansionism . </Li> <Li> Russia was defeated in the Russo - Japanese War, which resulted in less concern over Russian imperialism and encouraged Russia to secure its position elsewhere . France was already allied to Russia in the Dual Alliance . </Li> <Li> Britain was frightened about the rising threat of German imperialism . Kaiser Wilhelm II had announced to the world his intentions to create a global German empire and to develop a strong navy . Britain, traditionally having control of the seas, saw that a serious threat to its own empire and navy . </Li> <Li> In 1907, the Anglo - Russian Entente was agreed, which attempted to resolve a series of long - running disputes over Persia, Afghanistan and Tibet and helped to address British fears about the Baghdad Railway, which would help German expansion in the Near East . </Li> </Ol> <Li> France and Britain had signed five separate agreements regarding spheres of influence in North Africa in 1904, the Entente cordiale . The Tangier Crisis later encouraged co-operation between the two countries from their mutual fear of apparent German expansionism . </Li>

Why did britain join france and russia's entente