Through an investigation of the coastal cities of the Altantic Ocean, the author argues that the establishment of a real world market for the changing world environment and the nations interests are the most important contribution the Atlantic coastal cities had ever made to the Western European World.

Nowadays world market is getting more and more unified, and the relations of internationaleconomics are becoming more complex.

The formation and expansion of the world market is a most important aspect of the development of capitalist economy, even of the history of the whole world.

To analyze the characteristics and supply and demand relation of world oil market.

Influence of international potash fertilizer market on potash fertilizer production and supply-demand relations in China;