The routes that the Corps of Discovery took across the continent were not easy.
*Besides using rivers as a means of transportation, what other benefits do rivers
provide, especially in unknown territory?
*Why might the team have split up on part of the return trip?
*What are the benefits of splitting the party, at least for part of the trip? Write one paragraph and explain your answers to the questions above.

"six months ago, several of molly's friends joined the trimtime fitness center. each of them participated in trimtime's weight-reduction and fitness regimen. all reported substantial weight reduction, and all are visibly slimmer. molly is convinced. she joins trimtime and enrolls in the program, hoping and expecting to see the same results. she is especially delighted to learn that trimtime had adjusted its program to make it even more effective in a shorter period of time." what is the feature in question/attribute of interest in this argument?