"The Spaniards were much impressed with the productivity of manioc in Arawak agriculture in the Greater Antilles," historian Jonathan Sauer recounts in his history of crop plants. "[A Spanish historian] calculated that 20 persons working 6 hours a day for a month could plant enough yuca to provide cassava bread for a village of 300 persons for 2 years." By all accounts, the Taíno were prosperous -- "a well-nourished population of over a million people," according to Sauer. And yet... lacked the monumental architecture of the Maya or the mathematical knowledge of the Aztec. And most importantly, they were not organized in...