In the 15th century, the Incas emerged as a powerful state which, in the span of a century, formed the largest empire in pre-Columbian America.[11] Andean societies were based on agriculture, using techniques such as irrigation and terracing; camelid husbandry and fishing were also important. Organization relied on reciprocity and http://marcolwfqy.isblog.net/uma-an-lise-de-atilla-y-lmaz-a-r-17693690