Why did people always strive to discover lands?

The desire to expand their possession is quite natural for a person. Found the ancestors moved to new areas of land, when the resources for normal life on the old were no longer enough. In principle, the discovery of new lands can be associated with an interest in learning something new. Some land discoveries are random. But no matter how the expansion of the territory occurs, each new place brings something of its own, special, be it rich deposits of fossils or new species of plants and animals.