Despite the absence of written records, scholars still find evidence to indicate how early people lived and their ways of life. Some of the evidence that indicate how early people lived include texts written during the ancient times. In addition, there are a number of artifacts, which serve as indicators of how early people lived. Some of these artifacts include tools, coins, unearthed shacks, remains of pottery, grains that had been preserved, and paintings found in caves. Other artifacts, which serve as indicators of how early people lived; include toys of children, jewelry, as well as folklore and oral stories passed on from one generation to the next. Archeological records such as bones and minerals also serve as indicators of how early people lived (Schlabach, 2013).
Studies indicate that, in Amazon, various prehistoric societies had developed in several parts. This was despite the argument that humid and tropical conditions could have hindered the development of such societies. The prehistoric society in Amazon used to live in settlements before the arrival of the Europeans. There used to be small villages, most of which had a network of roads connecting them. The prehistoric society in Amazon practiced fish farming, agriculture, as well as the maintenance of forests. The prehistoric society was also properly organized and planned, and this helped in governance (Roosevelt, 1999).
During the 15th century, Europeans started making voyages via the sea with the sole aim of discovery. As a result of these voyages, the Europeans were able to dominate the world politically, economically and socially. The desire by the Europeans to spread Christianity and explore the new world contributed significantly to their domination of the new world. In addition, their efforts to instill western civilization to the new world also contributed to their dominance of the new world (Calloway, 2000).
Several factors led to the decline and eventual disappearance of the Marajo group of Amazon. One of the theories that explain the disappearance of this group is constant raids from other communities, which weakened this group. Diseases also contributed significantly to the disappearance of the Marajo who inhabited Amazon during the prehistoric period. Decline in civilization is also another factor that contributed to the disappearance of the Marajo (Roosevelt, 1999).