As a renowned expert on Turkestan and Tibet, he was able to obtain unrestricted access to European and Asian monarchs and politicians as well as to their geographical societies and scholarly associations. They all sought to purchase his exclusive knowledge about the power vacuum in Central Asia with gold medals, diamond-encrusted grand crosses, honorary doctorates and splendid receptions, as well as with logistic and financial support for his expeditions. Hedin, in addition to Nikolai Przhevalsky, Sir Francis Younghusband, and Sir Aurel Stein, was an active player in the British-Russian struggle for influence in Central Asia, known as the Great Game. Their travels were supported because they filled in the "white spaces" in contemporary maps, providing valuable information.