 Although Marx never developed a theory of colonialism, his analysis of capitalism emphasized its inherent tendency to expand in search of new markets. In his classic works such as The Communist Manifesto, Grundrisse, and Capital, Marx predicted that the bourgeoisie would continue to create a global market and undermine both local and national barriers to its own expansion. Expansion is a necessary product of the core dynamic of capitalism: overproduction. Competition among producers drives them to cut wages, which in turn leads to a crisis of under-consumption. The only way to prevent economic collapse is to find new markets to absorb excess consumer goods. From a Marxist perspective, some form of imperialism is inevitable. By exporting population to resource rich foreign territories, a nation creates a market for industrial goods and a reliable source of natural resources. Alternately, weaker countries can face the choice of either voluntarily admitting foreign products that will undermine domestic industry or submitting to political domination, which will accomplish the same end.