Answer:
The Mexico–United States barrier is a series of vertical barriers along the Mexico–United States border aimed at preventing illegal crossings from Mexico into the United States.
Wanted to unite all of South America into a single nation--> Simon Bolivar
Led a large group of American Indians and Mestizos against the Spanish--> Padre Miguel Hidalgo
Defeated Napoleons army to win independence from France--> Toussaint L'Ouverture
Supported Brazil's independence after Portugal was invaded by France--> Dom Pedro
These leaders were responsible for gaining the independence of their countries and/or regions from European colonial leaders. Bolivar liberated South America from Spain and Hidalgo did so for Mexico as well. L'Ourverture led the revolution in Haiti against the French. Pedro supported the only bloodless revolution in Brazil from the Portuguese. All of these movements occurred in the early 1800's which almost entirely ended 300 years of colonization in the Americas
The trails and the conditions were very rough, and they struggled to traverse across these trails. Also, the weather was very bad and many of the settlers got sick and died from disease along the way