Final answer:
The United States sought to reassure the Navajos of their friendly intentions in order to establish peaceful relations, foster a commercial relationship, and build trust through cultural exchange programs.
Step-by-step explanation:
The United States sought to reassure the Navajos of their friendly intentions because they wanted to establish peaceful relations and foster a mutually beneficial commercial relationship. The U.S. Government wanted to assure the Navajos that their journey had innocent objectives and that they wished to be friendly, useful neighbors. They also aimed to build trust by offering opportunities for influential chiefs to visit the United States and for young people to receive education and training.