Geographical knowledge grew very slowly. By the beginning of the eighteenth century, explorers had become familiar with the range of the ocean, the outline of the continents, and with many islands. At the beginning of the nineteenth century, four fifths of the land area of the entire globe was unknown. Africa, except a narrow rim of coast, was almost as little known as the planet Mars is to-day. At the opening of the last century men knew little more about Asia than did Marco Polo, three or four centuries earlier. In America the whole vast area west of the Mississippi River was unknown in 1800. The coast of Australia had not yet been traced, and nothing was known of its interior. At that time South America was better known than any other of the continental land masses, except Europe; now it is the least explored of all. The nineteenth century, wonderful for advancement in many fields of human endeavor, was a marvelous one for the growth of geographical knowledge. As we stand in the doorway of the twentieth century, there is scarcely one eleventh of the land area of the whole earth that remains unexplored. Lewis and Clark pushed their way through the unknown vastness of the American Northwest; Livingstone and Stanley penetrated the dark continent of Africa; and in September, 1909, Lieut. Robert E. Peary of the United States Navy startled civilization by announcing his discovery of the North Pole. With the exception of a few interior tracts to-day, the only portions of the earth unknown and unmapped lie around the poles, and these are being rapidly sought out and brought to knowledge.

Of all geographical conquests, by far the greatest is the discovery of America by Christopher Columbus in 1492 A.D. The story of Columbus is one of the most interesting and pathetic in history. It is a story of toil, hardship, perseverance, and great success, requited with disappointment and disgrace.

Christophoro Colombo was born in Genoa, Italy, about 1435 or 1436 A.D. Following the custom of those times in giving names Latin forms, his name became Christopher Columbus. In Latin the word columba means "dove." His father was a wool-comber who was wealthy enough to send his son to a university, where he studied mathematics and astronomy. On leaving the university, he worked a few months at his father's trade, but when he was fifteen years old he determined to be a sailor.

Of the late boyhood and early manhood of Columbus little is known. He seems to have traveled much, and it is certain that he studied much. It was popularly supposed in the time of Columbus that the earth was flat; that it was surrounded by a great world-river called "Oceanus" or the ocean, and that if one should come to the edge he would plunge down into illimitable space. From the time of Eratosthenes and Aristotle, Greek thinkers and scholars who lived several hundreds of years before the birth of Christ had known that the earth was round, and Columbus believed this fact too. He mastered the books, both ancient and contemporary, on geography and navigation, learned to draw charts and to construct spheres, and fitted himself to be a practical seaman and navigator.

In 1470 he arrived at Lisbon, Portugal, after he had been shipwrecked in a sea fight and had escaped to land on a plank. In Portugal he married the daughter of an old sea captain. He pored over the logs and papers of his father-in-law, and talked with old seamen of their voyages and of the mysteries of the western sea. About this time he seems to have arrived at the conclusion that much of the world remained undiscovered. There were strange rumors about the western sea. Navigators had seen queer pieces of wood and some canes in the ocean, and the bodies of two strange men had been washed ashore, "very broad-faced, and differing in aspect from Christians." European commerce was in need of a shorter route to Asia than the overland route then in use. Columbus hoped that he could reach the eastern coast of Asia by sailing west. He did not believe the earth as large as it really is, and he over-estimated the size of Asia, so that he did not realize the breadth of the Atlantic or the magnitude of the task before him.

Columbus was poor, and money was required for so huge an undertaking as a voyage to Asia. It was necessary, therefore, for him to seek aid in the enterprise. He asked help first from the senate of his native town, Genoa; but Genoa turned to him an unhearing ear. He applied next to King John of Portugal. The king referred the matter to a council of geographers, who reported against it. With the lurking hope that there might be something in the plan, the king was dishonorable enough to send out an expedition secretly to test it. The sailors who made the attempt soon lost heart and returned without having accomplished anything. When Columbus learned of the king's secret attempt, he was so outraged that he left Portugal for Spain. At about the same time he sent his brother Bartholomew to England to enlist the assistance of the British sovereign, King Henry VII. After much waiting and much vexation, Columbus at last gained the interest of the Spanish king, Ferdinand, who referred the proposition to a council of his astronomers and geographers. They finally decided that the project was vain and visionary and that they could have nothing more to do with it.

In great discouragement Columbus began preparations to go to France. At the door of a monastery in the little maritime town of Palos, he knocked and asked for bread and water for his son, Diego, who was accompanying him. He was received at the monastery, and there he met some persons of influence who interceded for him with the Spanish queen, Isabella. He went to the Court again, his plan was once more investigated, and once more Columbus was refused the aid he was seeking. He set out for France and had journeyed some distance on the way. In the meantime an official won the queen's consent to the enterprise, and there is a story that in her enthusiasm she offered to pledge her jewels to raise money for the expedition. A messenger who was sent to overtake Columbus brought him back, and on the seventeenth of April, 1492, the formal agreement between him and the king and queen of Spain was entered into, signed, and sealed.

Columbus's aim was to find the east coast of Asia. For the accomplishment of this he had a number of motives. He wanted to win wealth and fame for himself, to provide a shorter and cheaper route for commerce with the East, and to convert to Christianity the Grand Khan, a great Asiatic ruler, to whom he bore a letter of introduction from the rulers of Spain.

Great difficulty was experienced in finding sailors for so uncertain and terrifying a trip. Freedom was offered to convicts and bankrupts if they would accompany the expedition. At last seamen were secured to man three small ships, stores were provided, and everything was made ready for the voyage. The adventurers numbered, all told, one hundred and twenty. The shore presented a strange spectacle on the morning of departure. The friends of the sailors stood on shore weeping and wringing their hands, confident in the belief that their loved ones would be swallowed up by some fabulous monster of the western deep, or in some way be forever lost to them. On the morning of Friday, August 3, 1492, at eight o'clock, the little fleet of three ships weighed anchor at the port of Palos, Spain, and set out on the most uncertain and the greatest of all ocean voyages.

The ships had been on the sea three weeks, and no land had yet been sighted. The compass no longer pointed due north. A meteor fell into the ocean not far from the ships. The sailors lost courage. They declared that they must perish if they went on, and that their commander ought to be compelled to return. Some of them proposed to throw him into the sea. Columbus kept two reckonings; a correct one for himself, and an incorrect one to appease the sailors. He pleaded with his men to be courageous, as long as mild methods availed. He then grew harsh and commanded them. Through all the uncertainty and the mutterings of the sailors, he clung unwaveringly to his purpose—to push forward. He had no thought of going back.