Edited sentence: , maniok, ... They also transported tropical crops from one tropical country to another (such as banana, sugar cane, pineapple, ...).As time evolved even the indigenous communities started to cultivate them, thinking to earn a buck or two.Since the Europeans came to discover (and populate) South America, Africa, Asia and other tropical areas, they introduced allot of "their" crops, crops that were not indigenous in the newly discovered territories and thus the beginning of of what would become known as "another great ecological tragedy".The Europeans did this because of the need the feed themselves whilest staying in the country and also to make profit out of those contemporary "cash crops" (such as the sugar cane plantations in the caribbean, pineapple plantations on  Hawaii, ...) Little did they now indigenous (and more tasty) alternatives existed in these parts.The crops they brought included millet, cassave