In these circumstances it was decided to send General Gordon to withdraw the Egyptian garrisons from the Soudan, and to give up that vast country to its native rulers. Gordon made his way to Khartoum, but he found the native revolt more formidable than he expected. He was besieged in that city, and refusing to leave the people to their fate, heroically defended it against great odds for nearly a year. An expedition sent under Wolseley to release him did not arrive till Khartoum had fallen and Gordon was slain (1885). After being defeated in several battles, the forces of the Mahdi were taught that, however brave, they were no match for our troops. When it was determined to reconquer the Soudan the duty was entrusted to Sir Herbert Kitchener, who routed the Khalifa at Omdurman in 1898. During recent years there have also been troubles on our Indian frontier. In 1886 we annexed Burma, which had suffered much misery under a cruel tyrant. But the greatest danger to India lies on the north-western border, where Russia has been making rapid progress. The conquest of Merv by the Russians brought their dominion close to that of our allies, the Afghans, and it became necessary to establish a fixed boundary between them. While this was being done, the Russians came into collision with the Afghans at Penjdeh, and in 1885 inflicted a defeat upon them. As a result of this quarrel, it seemed possible at one time that we might go to war with Russia. We came, however, to an agreement with that power, and as we now have a more settled boundary, we may hope to avoid further conflict on the question. But for many years we have been busy in fortifying our north-western frontier, that we may be ready to defend India against invasion. We have lately seen a vast extension of our empire in Africa. And though the love of gold has been the great motive in our advance into the Dark Continent, our rule is sure to prove a benefit to the native peoples. Vast tracts of land rich in mineral wealth, and well adapted both for pasture and cultivation, have been brought under the sway of Britain. Commerce has been stimulated, and mission stations have been established on almost every lake and river. From Dr Livingstone's advent in Africa in 1841 dates the modern interest in South Africa. He passed away in 1873. But the explorations of Stanley, Baker, Burton, and the operations of the chartered companies in Uganda and Mashonaland have all helped to make the Dark Continent more familiar to the public. At the general election in the spring of 1880, the Liberals had a large majority, and Mr Gladstone again became prime-minister. In accordance with the expectation of the country, he proceeded to make some important changes.