Sun Yat-sen used six propaganda techniques in the United States to help overthrow the Ching Dynasty in 1911: (a) individual propaganda to gain supporters through personal contact and individual persuasion; (b) propaganda of deed to solicit donations and to mobilize his supporters for military actions; (c) travel propaganda to broaden the base of revolutionary support; (d) newspaper propaganda to publicize and explain his revolutionary program; (e) debate propaganda to refute antirevolutionary criticism through speeches and pamphlets; and (f) missionary propaganda to seek sympathy and support from American missionaries and Christians.