Why did president Jefferson want Lewis and clark to treat native Americans fairly on their journey?

President Jefferson wanted Lewis and Clark to treat Native Americans fairly during their expedition to foster peaceful relations and facilitate trade. He believed that respectful interactions could help secure American interests in the newly acquired territories and promote the nation's expansionist goals. By establishing goodwill, Jefferson aimed to mitigate potential conflicts and encourage cooperation between settlers and Native tribes in the West. This approach was also rooted in a broader vision of American democracy and the ideal of coexistence.