The South was the most prosperous. Until 1793, its principal productions were rice, indigo, tar, and tobacco. The soil and climate were highly favorable to the growth of cotton, but its culture was unprofitable, for its seeds were so closely interwoven in its texture that only by hard work could a slave clean five pounds a day. In the year named, Eli Whitney, a New England schoolteacher, living in Georgia, invented the cotton gin, with which a man can clean a thousand pounds of cotton a day. This rendered its cultivation highly profitable, gave an importance to the institution of slavery, and, in its far-reaching effects, was the greatest invention ever made in this country. TROUBLES WITH FRANCE. The matter which chiefly occupied public attention during the administration of the elder Adams was our difficulties with France. That country had hardly emerged from the awful Reign of Terror in which a million of people were massacred, and it was under the control of a set of bloody minded miscreants, who warred against mankind and believed they could compel the United States to pay a large sum of money for the privilege of being let alone. They turned our representatives out of the country, enacted laws aimed to destroy our commerce, and instructed their naval officers to capture and sell American vessels and cargoes. [Illustration: THE COTTON GIN, INVENTED IN 1793. A machine which does the work of more than 1,000 men.] President Adams, who abhorred war, sent special ministers to protest against the course of France. The impudent reply was there would be no stoppage until the men who controlled the French government were paid large sums of money. This exasperating notice brought the answer from Charles Cotesworth Pinckney which has become historical: "Millions for defense, but not one cent for tribute." Although war was not declared, it prevailed on the ocean during the latter half of 1798. Congress convened, abolished the treaties with France, strengthened the navy, and ordered it to attack French vessels wherever found. Several engagements took place, in all of which the French men-of-war were whipped "to a standstill." The most important of the naval battles was between the _Constitution_, under Commodore Truxton, and the French frigate _L'Insurgente_, in which the latter was captured. A messenger was sent to Mount Vernon, carrying the appointment of Washington as commander-in-chief of the American army. He found the great man in the harvest field; but when Washington donned his spectacles and read the paper, he replied that he was then as always ready to serve his country in whatever capacity he could. He accepted with the understanding that he was not to be called into the field until actual hostilities took place on the land, and that Alexander Hamilton should until then be the commander-in-chief.