Belgium's main natural resources are construction materials, silica sand and carbonates. Previously, coal was also a natural resource for Belgium.
With a high population density, much of Belgium's land is used for population centers, with limited natural resources being pulled from its land. Because of this, Belgium must import the majority of the raw materials used in its advanced manufacturing plants. This makes Belgium very dependent on the state of the world market. What few natural resources it does have are kept in the country for use in manufacturing.
While Belgium is lacking in natural resources, nearly 30 percent of its land is used for agricultural purposes. This allows for an export of products such as beets, tobacco and grains to balance the need to import natural resources.