求翻译：在16世纪开始的“黑三角贸易”即奴隶贸易，欧洲奴隶贩子从本国出发装载盐、布匹、朗姆酒等，在非洲换成奴隶沿着所谓的"中央航路"通过大西洋，在美洲换成糖、烟草和稻米等返航。在欧洲西部、非洲的几内亚湾附近、美洲西印度群岛之间，航线大致构成三角形状，由于被贩运的是黑色人种，故又称“黑三角贸易”。历时400年之久。是什么意思？

In the 16th century "black triangular trade" that the slave trade, European slave traders from their starting load of salt, cloth, rum, etc., into slavery in Africa, along the so-called "central route" through the Atlantic, replaced in the Americas sugar, tobacco and rice return. In Western Europe,

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Starts “the black triangle trade” in the 16th century is the slave trade, the European slave peddler embarks the loading salt from our country, the cloth, the rum and so on, changes into the slave in Africa along so-called " central route " through Atlantic, changes into the sugar, the tobacco and t

At the beginning of 16th century "black triangular trade" that the slave trade, European slave traffickers from their departure carrying salt, cloth, rum, and Exchange in Africa for slaves along the so-called "central route" through the Atlantic, replacing the American homeland such as sugar, tobacc