During the nearly two centuries of restricted foreign contact during the Edo period (1600–1868), the Japanese people still maintained a curiosity about foreign cultures. This map, published in the early 19th century, depicts an enormous archipelago representing Japan at the center of the world. Inset images and descriptions of foreign people, the distance from Japan to their lands:
Global map of "optimal intermediate locations between trading centers," based on the earth's geometry and the speed of light. Trades now occur so rapidly and in such fantastic quantity, that the speed of light itself presents limits to the efficiency of global computerized trading networks.