Amazonia

The Amazon basin is drained by over a thousand tributaries that empty into the massive Amazon River, which in turn dumps millions of gallons of fresh water into the ocean per second. The Amazon River is over 6,000 miles long and more than 24 miles wide at its widest point. An astonishing variety of plants and animals live in the rain forest, including capybara, sloths, macaws and millions of insect species, all living in different strata of the forest, from the tops of the tall trees to the dirt and streams below, and everywhere in between. The Spanish Conquistador Francisco de Orellana was the first European to successfully navigate the length of the Amazon River. Virtually all of his men died in the voyage; when he returned to Spain, Orellana told of attacks on his men by a group of fierce warrior women. In reality, the attackers were probably long-haired men. He likened his assailants to the Amazon women of Greek mythology and the name stuck.

From the game's History encyclopedia, AoE3: DE 100.19.18309.