<Tr> <Th> Economics </Th> </Tr> <Tr> <Td> A supply and demand diagram, illustrating the effects of an increase in demand . </Td> </Tr> <Tr> <Td> <Ul> <Li> Index </Li> <Li> Outline </Li> <Li> Category </Li> </Ul> </Td> </Tr> <Ul> <Li> Index </Li> <Li> Outline </Li> <Li> Category </Li> </Ul>

When does most trade take place ... when there is absolute or comparative advantage