The Basic Industries sector of the economy is concerned with expanding the capital resources of the colony, i.e. building new factories. The effort of the basic industries is divided among the various industries on the basis of which industries have the most unemployment, although some effort will in general be devoted to every industry, just to keep ahead of demand. Adding new capital requires money as well as labor, so a colony with a cash shortage will have difficulty expanding its industries. Understanding how Basic Industries deals with unemployment in an industry is essential to proper planetary management, and the section below on Advanced Planetary Management is largely on how to manage Basic Industries.