2. Differences in natural resources. Natural resources are not spread evenly around
the world, so another set of trade flows developed moving them from where they
are located to where they are needed. Unlike manufacturing plants which can be
relocated, commodity trades are dictated by the distribution of resources. But the
cost of recovering natural resources is important, too. If a country has no oil and
there is a demand for motor cars, it has to import. But where there are local
supplies, trade is determined by relative delivered costs of domestic and imported oil.