高三教材在讲述宗教的消极作用时，说宗教是殖民主义、帝国主义侵略扩张的工具，并引用“一个传教士抵得上一个营的军队”作为例证，那么这句话的来历是怎样的呢？这件事发生在南部非洲国家博茨瓦纳。博茨瓦纳东南与南非相邻，东北邻津巴布韦，西与纳米比亚接壤，战略位置非常 When the senior high school textbooks tell about the negative effects of religion, they say that religion is a tool for colonialism and imperialist invasion and expansion, and they cite the example of “a missionary’s army that arrived at a battalion” as an example. What is the origin of this sentence? ? This happened in Botswana, a southern African country. Botswana is adjacent to South Africa in the southeast, Zimbabwe in the northeast and Namibia in the west. Its strategic location is very high.