What historical event impact the theme of leaders and visionaries?

A historical event impact the theme of leaders and visionaries is explained below in detail.

Explanation:

For centenaries, traditional communities have populated the forests of the Brazilian Amazon, protecting the forest through their sensible stewardship. Despite these archives, they have been rejected for their rights to their homelands and resources. Anthropologist Alfredo Wagner Berno originated the region's first mapping plan challenging conventional maps by making evident for the first time the requirements of traditional populations over the millions of areas of their inhabitant motherlands. Wagner's groundbreaking action became the standard for the New Social plan of the Amazon, empowering communities to make use of the newest technologies to sustain their rights over their regions and resources.

the rhetoric device being used to persuade the audience is pathos.

what is the sentence?