History
People lived in the upper Amazon long before the Inca. At Santa Ana–La Florida in Zamora Chinchipe, archaeologists of the Mayo-Chinchipe culture have found the oldest known evidence of cacao use, from about 5,300 years ago. The Shuar and related peoples held the southern forests against both Inca and Spanish incursions, destroying the Spanish town of Sevilla de Oro in a revolt in 1599.
In 1541 Gonzalo Pizarro led an expedition from Quito in search of cinnamon and gold; his lieutenant Francisco de Orellana went ahead down the Napo and ended up sailing the whole length of the Amazon to the Atlantic, the first European to do so. Missionaries followed, and in the late nineteenth century the rubber boom brought forced labour and violence to the rivers. Ecuador's claim to a much larger Amazon was cut back after the 1941 war with Peru, and fighting flared again in the Cordillera del Cóndor in 1981 and 1995 before the 1998 peace agreement fixed the border.
The modern Oriente was made by oil. A Texaco-Gulf consortium struck crude at Lago Agrio in 1967, a pipeline over the Andes opened in 1972, and roads, settlers and towns followed. Pollution from that era produced a long legal battle with Chevron, which acquired Texaco, while Indigenous organisations, from the Shuar Federation founded in 1964 to the Kichwa of Sarayaku, who won a case at the Inter-American Court of Human Rights, became leading defenders of their land. In 2023 Ecuadorians voted in a national referendum to halt oil extraction in Block 43 inside Yasuní.
