Hedin had therewith decided to become an explorer. He was attracted to the idea of traveling to the last mysterious portions of Asia and filling in the gaps by mapping an area completely unknown in Europe. As an explorer, Hedin became important for the Asian and European powers, who courted him, invited him to give numerous lectures, and hoped to obtain from him in return topographic, economic and strategic information about inner Asia, which they considered part of their sphere of influence. As the era of discovery came to a close around 1920, Hedin contented himself with organizing the Sino-Swedish Expedition for qualified scientific explorers.