Atlantic World Discovery By ckneafsey1 Period: Sep 27, 1490 to Sep 27, 1765 Atlantic discovery Sep 27, 1492 Columbus sailed the ocean blue Sep 27, 1511 First enslaved Africans arrive in the Americas Sep 27, 1521 Cortés conquers Aztec Empire Sep 27, 1533 Pizarro conquers Incan Empire Sep 27, 1607 English found Jamestown Sep 27, 1620 English found Plymouth Sep 27, 1763 French and Indian War ends