The massacre at Wounded Knee in 1890 occurred in response to the spread of the Ghost Dance movement. the US Army’s humiliation at Little Bighorn. the uprising known as Red Cloud’s War. the discovery of gold at Pike’s Peak.Cumulative Exam Cumulative Exam Active 1 2 How did Progressives plan to improve government? by reforming the ranching industry by reforming the tax system O by reforming the agricultural inglystry