When European nations began to plant colonies in America, they treated them in accordance with a theory which prevailed until it was upset by the American Revolution. According to this ignorant and barbarous theory, a colony was a community which existed only for the purpose of enriching the country which had founded it. At the outset, the Spanish notion of a colony was that of a military station, which might plunder the heathen for the benefit of the hungry treasury of the Most Catholic monarch. But this theory was short-lived, like the enjoyment of the plunder which it succeeded in extorting. According to the principles and practice of France and England--and of Spain also, after the first romantic fury of buccaneering had spent itself--the great object in founding a colony, besides increasing one's general importance in the world and the area of one's dominions on the map, was to create a dependent community for the purpose of trading with it. People's ideas about trade were very absurd. It was not understood that when two parties trade with each other freely, both must be gainers, or else one would soon stop trading. It was supposed that in trade, just as in gambling or betting, what the one party gains the other loses. Accordingly laws were made to regulate trade so that, as far as possible, all the loss might fall upon the colonies and all the gain accrue to the mother-country. In order to attain this object, the colonies were required to confine their trade entirely to England. No American colony could send its tobacco or its rice or its indigo to France or to Holland, or to any other country than England; nor could it buy a yard of French silk or a pound of Chinese tea except from English merchants. In this way English merchants sought to secure for themselves a monopoly of purchases and a monopoly of sales. By a further provision, although American ships might take goods to England, the carrying-trade between the different colonies was strictly confined to British ships. Next, in order to protect British manufacturers from competition, it was thought necessary to prohibit the colonists from manufacturing. They might grow wool, but it must be carried to England to be woven into cloth; they might smelt iron, but it must be carried to England to be made into ploughshares. Finally, in order to protect British farmers and their landlords, corn-laws were enacted, putting a prohibitory tariff on all kinds of grain and other farm produce shipped from the colonies to ports in Great Britain.