Most of the major powers (and some minor ones such as Belgium, the Netherlands and Denmark) engaged in imperialism, building up their overseas empires especially in Africa and Asia. Although there were numerous insurrections, historians count only a few wars, and they were small-scale: two Anglo-Boer Wars (1880–1881 and 1899–1902), the Sino-Japanese War (1894–1895), First Italo-Ethiopian War (1895–96), Spanish–American War (1898), and Italo-Ottoman war (1911). The largest was the Russo-Japanese War of 1905, the only in which two major powers fought each other.