South America has long been the land of revolutions. In 1821, there was a general revolt against Spain in favor of independence. Great sympathy was felt for them in this country, and, in March, 1822, Congress passed a bill recognizing the embryo republics as sovereign nations. In the following year President Monroe sent a message to Congress in which he declared that for the future the American continent was not to be considered as territory for colonization by any foreign power. This consecration of the whole Western Hemisphere to free institutions constitutes the MONROE DOCTRINE, one of the most precious and jealously guarded rights of the American nation. The memorable document which bears the President's name was written by John Quincy Adams, his secretary of State. America could never forget Lafayette, who had given his services without pay in our struggle for independence, who shed his blood for us, and who was the intimate and trusted friend of Washington. He was now an old man, and, anxious to visit the country he loved so well, he crossed the ocean and landed in New York, in August, 1824. He had no thought that his coming would cause any stir, and was overwhelmed by the honors shown him everywhere. Fort Lafayette saluted him as he sailed up New York Bay, and processions, parades, addresses, feastings, and every possible attention were given to him throughout his year's visit, during which he was emphatically the "nation's guest." Nor did the country confine itself to mere honors. He had been treated badly in France and was poor. Congress made him a present of $200,000 in money, and sent him home in the frigate _Brandywine_, named in his honor, for it was at the battle of the Brandywine that Lafayette was severely wounded. An important invention introduced into this country from England in 1822 was lighting by gas, which soon became universal, to be succeeded in later years by electricity. Steamboat navigation was common and travel by that means easy. On land we were still confined to horseback and stages, but there was great improvement in the roads, through the aid of Congress and the different States. COMPLETION OF THE ERIE CANAL.