Some Negro slaves were brought to Europe by the Spaniards in the fourteenth century, and a small trade was continued by the Portuguese, who conquered territory from the "tawny" Moors of North Africa in the early fifteenth century. Later, after their severe repulse at Al-Kasr-Al-Kabu, the Portuguese began to creep down the west coast in quest of trade. They reached the River of Gold in 1441, and their story is that their leader seized certain free Moors and the next year exchanged them for ten black slaves, a target of hide, ostrich eggs, and some gold dust. The trade was easily justified on the ground that the Moors were Mohammedans and refused to be converted to Christianity, while heathen Negroes would be better subjects for conversion and stronger laborers. In the next few years a small number of Negroes continued to be imported into Spain and Portugal as servants. We find, for instance, in 1474, that Negro slaves were common in Seville. There is a letter from Ferdinand and Isabella in the year 1474 to a celebrated Negro, Juan de Valladolid, commonly called the "Negro Count" (El Conde Negro), nominating him to the office of "mayoral of the Negroes" in Seville. The slaves were apparently treated kindly, allowed to keep their own dances and festivals, and to have their own chief, who represented them in the courts, as against their own masters, and settled their private quarrels.

Between 1455 and 1492 little mention is made of slaves in the trade with Africa. Columbus is said to have suggested Negroes for America, but Ferdinand and Isabella refused. Nevertheless, by 1501, we have the first incidental mention of Negroes going to America in a declaration that Negro slaves "born in the power of Christians were to be allowed to pass to the Indies, and the officers of the royal revenue were to receive the money to be paid for their permits."

About 1501 Ovando, Governor of Spanish America, was objecting to Negro slaves and "solicited that no Negro slaves should be sent to Hispaniola, for they fled amongst the Indians and taught them bad customs, and never could be captured." Nevertheless a letter from the king to Ovando, dated Segovia, the fifteenth of September, 1505, says, "I will send more Negro slaves as you request; I think there may be a hundred. At each time a trustworthy person will go with them who may have some share in the gold they may collect and may promise them ease if they work well."[70] There is a record of a hundred slaves being sent out this very year, and Diego Columbus was notified of fifty to be sent from Seville for the mines in 1510.

After this time frequent notices show that Negroes were common in the new world.[71] When Pizarro, for instance, had been slain in Peru, his body was dragged to the cathedral by two Negroes. After the battle of Anaquito the head of the viceroy was cut off by a Negro, and during the great earthquake in Guatemala a most remarkable figure was a gigantic Negro seen in various parts of the city. Nunez had thirty Negroes with him on the top of the Sierras, and there was rumor of an aboriginal tribe of Negroes in South America. One of the last acts of King Ferdinand was to urge that no more Negroes be sent to the West Indies, but under Charles V, Bishop Las Casas drew up a plan of assisted migration to America and asked in 1517 the right for immigrants to import twelve Negro slaves, in return for which the Indians were to be freed.

Las Casas, writing in his old age, owns his error: "This advice that license should be given to bring Negro slaves to these lands, the Clerigo Casas first gave, not considering the injustice with which the Portuguese take them and make them slaves; which advice, after he had apprehended the nature of the thing, he would not have given for all he had in the world. For he always held that they had been made slaves unjustly and tyrannically; for the same reason holds good of them as of the Indians[72]."

As soon as the plan was broached a Savoyard, Lorens de Gomenot, Governor of Bresa, obtained a monopoly of this proposed trade and shrewdly sold it to the Genoese for twenty-five thousand ducats. Other monopolies were granted in 1523, 1527, and 1528[73]. Thus the American trade became established and gradually grew, passing successively into the hands of the Portuguese, the Dutch, the French, and the English.

At first the trade was of the same kind and volume as that already passing northward over the desert routes. Soon, however, the American trade developed. A strong, unchecked demand for brute labor in the West Indies and on the continent of America grew until it culminated in the eighteenth century, when Negro slaves were crossing the Atlantic at the rate of fifty to one hundred thousand a year. This called for slave raiding on a scale that drew upon every part of Africa—upon the west coast, the western and Egyptian Sudan, the valley of the Congo, Abyssinia, the lake regions, the east coast, and Madagascar. Not simply the degraded and weaker types of Negroes were seized, but the strong Bantu, the Mandingo and Songhay, the Nubian and Nile Negroes, the Fula, and even the Asiatic Malay, were represented in the raids.

There was thus begun in modern days a new slavery and slave trade. It was different from that of the past, because more and more it came in time to be founded on racial caste, and this caste was made the foundation of a new industrial system. For four hundred years, from 1450 to 1850, European civilization carried on a systematic trade in human beings of such tremendous proportions that the physical, economic, and moral effects are still plainly to be remarked throughout the world. To this must be added the large slave trade of Mussulman lands, which began with the seventh century and raged almost unchecked until the end of the nineteenth century.

These were not days of decadence, but a period that gave the world Shakespeare, Martin Luther, and Raphael, Haroun-al-Raschid and Abraham Lincoln. It was the day of the greatest expansion of two of the world's most pretentious religions and of the beginnings of the modern organization of industry. In the midst of this advance and uplift this slave trade and slavery spread more human misery, inculcated more disrespect for and neglect of humanity, a greater callousness to suffering, and more petty, cruel, human hatred than can well be calculated. We may excuse and palliate it, and write history so as to let men forget it; it remains the most inexcusable and despicable blot on modern human history.

The Portuguese built the first slave-trading fort at Elmina, on the Gold Coast, in 1482, and extended their trade down the west coast and up the east coast. Under them the abominable traffic grew larger and larger, until it became far the most important in money value of all the commerce of the Zambesi basin. There could be no extension of agriculture, no mining, no progress of any kind where it was so extensively carried on[74].