Tupi

The Tupis are a minor native tribe in Age of Empires III that at first inhabited the Amazon rain forest, but soon spread southward and occupied the Atlantic coast. They were aggressive, being said to have been ritualistic cannibals. They can be found in the Amazonia and Pampas maps. Once you ally with them by placing and building a Trading Post in their camp, they will offer Tupi Blackwood Archers to train and also offer native upgrades; Tupi Poison Arrow Frogs (improved archer attack), Tupi Animal Lore (allows you to train up to 12 Cougars at the Town Center) and Tupi Forest Burning (buildings cost less Wood)