Let us now suppose the same countries to have the most perfect freedom of intercourse in corn, and the expenses of freight, etc. to be quite inconsiderable. And let us still suppose one of them to increase very greatly above the rest, in manufacturing capital and skill, in wealth and population. I should then say, that as the importation of corn would prevent any great difference in the price of raw produce, it would prevent any great difference in the quantity of capital laid out upon the land, and the quantity of corn obtained from it; that, consequently, the great increase of wealth could not take place without a great dependence on the other nations for corn; and that this dependence, under the circumstances supposed, would be the natural sign, and absolutely necessary consequence of the increased wealth and population of the country in question. These I consider as the two alternatives necessarily belonging to a great comparative increase of wealth; and the supposition here made will, with proper restrictions, apply to the state of Europe. In Europe, the expenses attending the carriage of corn are often considerable. They form a natural barrier to importation; and even the country which habitually depends upon foreign corn, must have the price of its raw produce considerably higher than the general level. Practically, also, the prices of raw produce, in the different countries of Europe, will be variously modified by very different soils, very different degrees of taxation, and very different degrees of improvement in the science of agriculture. Heavy taxation, and a poor soil, may occasion a high comparative price of raw produce, or a considerable dependence on other countries, without great wealth and population; while great improvements in agriculture and a good soil may keep the price of produce low, and the country independent of foreign corn, in spite of considerable wealth. But the principles laid down are the general principles on the subject; and in applying them to any particular case, the particular circumstances of such case must always be taken into consideration. With regard to improvements in agriculture, which in similar soils is the great cause which retards the advance of price compared with the advance of produce; although they are sometimes very powerful, they are rarely found sufficient to balance the necessity of applying to poorer land, or inferior machines. In this respect, raw produce is essentially different from manufactures.