11. ~The Dutch Slave-Trade.~ The Dutch seem to have commenced the slave-trade to the American continent, the Middle colonies and some of the Southern receiving supplies from them. John Rolfe relates that the last of August, 1619, there came to Virginia "a dutch man of warre that sold us twenty Negars."[1] This was probably one of the ships of the numerous private Dutch trading-companies which early entered into and developed the lucrative African slave-trade. Ships sailed from Holland to Africa, got slaves in exchange for their goods, carried the slaves to the West Indies or Brazil, and returned home laden with sugar.[2] Through the enterprise of one of these trading-companies the settlement of New Amsterdam was begun, in 1614. In 1621 the private companies trading in the West were all merged into the Dutch West India Company, and given a monopoly of American trade. This company was very active, sending in four years 15,430 Negroes to Brazil,[3] carrying on war with Spain, supplying even the English plantations,[4] and gradually becoming the great slave carrier of the day. The commercial supremacy of the Dutch early excited the envy and emulation of the English. The Navigation Ordinance of 1651 was aimed at them, and two wars were necessary to wrest the slave-trade from them and place it in the hands of the English. The final terms of peace among other things surrendered New Netherland to England, and opened the way for England to become henceforth the world's greatest slave-trader. Although the Dutch had thus commenced the continental slave-trade, they had not actually furnished a very large number of slaves to the English colonies outside the West Indies. A small trade had, by 1698, brought a few thousand to New York, and still fewer to New Jersey.[5] It was left to the English, with their strong policy in its favor, to develop this trade.