 Foreigners and Tibetan Catholics were often attacked and killed in the area.The British invasion of Lhasa in 1904 had repercussions in the Tibetan Buddhist world, causing extreme anti-western and anti-French Catholic sentiment among Tibetan Buddhists.The British invasion also triggered intense and sudden Qing intervention in Tibetan areas, to develop, assimilate, and bring the regions under strong Qing central control.