Whether motivated by the quest for power, riches, or other factors, explorers have searched throughout history to uncover the unknown. ""Exploration in the Age of Empire, 1750-1953, Revised Edition"" offers extensive coverage of European exploration and imperial expansion in Africa and Asia, using three themes to recount the experiences and achievements of individual explorers - the motives of the explorers, how changing ideas influenced the conduct and understanding of exploration, and how competition and politics of the European empires were shaped by exploration. Coverage of this title includes: Dr. David Livingstone's search for the source of the Nile River in the jungles of central Africa in 1871; the exploration of Central Asia by the competing imperial powers of Russia and Great Britain; European exploration of the Niger, Nile, Zambezi, and Congo rivers; the exploration of the Arabian Peninsula; and, altitude sickeness and oxygen technology.