New worlds were created after the biological exchange (1492) 16th and 17th century = early modern period. After 1492 economic exchanges took place in 16-19th centuries. Of all commercial ties of the early modern world, the slave trade was at the center; none had more profound consequences than the slave trade. Without the slave trade, the atlantic world economy would not have happened. The atlantic world economy is based on what the slaves produced. The atlantic world economy is the seed of the modern world, where exchanges of wealth led to modern capitalism. Approximately 12. 5 million people were taken from africa to the americas. 14-15% of them died during their voyage. Countless others died on the coast of africa, waiting to be shipped out. Slavery existed before this period, before the 16th century, in rome, greece, and in. To distinguish the atlantic and traditional slave trade, the atlantic trade is called new slavery.