Mercantilism is an economic theory that holds the prosperity of a nation dependent upon its supply of capital, and that the global volume of trade is “unchangeable.” Economic assets or capital, are represented by bullion (gold, silver, and trade value) held by the state, which is best increased through a positive balance of trade with other nations (exports minus imports). Mercantilism suggests that the ruling government should advance these goals by playing a protectionist role in the economy; by encouraging exports and discouraging imports, especially through the use of tariffs. Mercantilism was the dominant school of thought throughout the early modern period (from the 16th to the 18th century). Domestically, this led to some of the first instances of significant government intervention and control over the economy, and it was during this period that much of the modern capitalist system was established. Internationally, mercantilism encouraged the many European wars of the period and fueled European imperialism. Belief in mercantilism began to fade in the late 18th century, as the arguments of Adam Smith and the other classical economists won out. Today, mercantilism (as a whole) is rejected by economists, though some elements are looked upon favourably by non-economists. I hope I helped.