Final answer:
Native American trade networks operated on economic and cultural exchanges with mutual benefits, leading to positive impacts on their communities. European contact introduced mercantilism and disruption, causing significant native population declines, yet Native Americans still influenced the shaping of new societies.
Step-by-step explanation:
Long before Europeans arrived in the New World, Native Americans had established intricate trade networks that operated mainly on an economic exchange and cultural interactions basis, which can be characterized as A) Economic exchange and cultural interactions; positive impact on communities; mutual benefit. These networks had a positive impact on native peoples as they facilitated not only the trade of goods but also the sharing of knowledge, ideas, and culture, leading to an interconnected and mutually beneficial relationship among various tribes.
The arrival of Europeans introduced significant changes, particularly through their economic pursuits of natural resources, such as furs, metals, and wood, and establishment of the mercantilist economy. This resulted in profound societal and ecological disruptions, as well as the spread of diseases to which indigenous populations had no immunity, leading to catastrophic population declines.