> inadvertently introducing Not always inadvertently, perhaps: https://www.history.com/news/colonists-native-americans-smallpox-blankets https://www.history.c

> inadvertently introducing Not always inadvertently, perhaps: https://www.history.com/news/colonists-native-americans-smallpox-blankets https://www.history.com/news/colonists-native-americans-smal... Although that article says that "there’s only one clearly documented instance of a colonial attempt to spread smallpox", the fact that there is any "clearly documented instance" of such an attempt is pretty horrific.