"As the twentieth century approached, therefore, the pace of technological change and uneven growth rates made the international system much more unstable and complex than it had been fifty years earlier. This was manifested in the frantic post-1880 jostling by the Great Powers for additional colonial territories in Africa, Asia, and the Pacific, partly for gain, partly out of a fear of being eclipsed. It also manifested itself in the increasing number of arms races, both on land and at sea, and in the creation of fixed military alliances, even in peacetime, as the various governments sought out partners for a possible future war. Behind the frequent colonial quarrels and international crises of the pre-1914 period, however, the decade-by-decade indices of economic power were pointing to even more fundamental shifts in the global balances—indeed, to the eclipse of what had been, for over three centuries, essentially a Eurocentric world system. Despite their best efforts, traditional European Great Powers like France and Austria-Hungary, and a recently united one like Italy, were falling out of the race. By contrast, the enormous, continent-wide states of the United States and Russia were moving to the forefront, and this despite the inefficiencies of the czarist state. Among the western European nations only Germany, possibly, had the muscle to force its way into the select league of the future world Powers. Japan, on the other hand, was intent upon being dominant in East Asia, but not farther afield. Inevitably, then, all these changes posed considerable, and ultimately insuperable, problems for a British Empire which now found it much more difficult to defend its global interests than it had a half-century earlier."