On what basis does james michael cavanaugh (document 15.5) claim to be in a better position than benjamin butler to judge the best way to deal with indians? what assumptions about indians and their culture underlie the policy of assimilation advocated by reformers such as helen hunt jackson (document 15.6)? how does thomas nast's illustration (document 15.7) highlight the contrasting arguments made by congressman cavanaugh (document 15.5) and helen hunt jackson (document 15.6)? what options did indians have when confronted with white determination to eradicate their culture? what choice does zitkala-ša (document 15.8) make? why? how does chief joseph's experience (document 15.9) reflect the fundamental contradiction of federal policy toward indians?