 Complete the following phrase:  By 1872 the Overland Telegraph Line between Darwin and Alice Springs had been completed, which gave access to Europeans through many traditional lands. Pastoralism grew little by little. As the telegraph station to the south at Barrow Creek was constructed and inhabited, conflict between the local Kaytetye people and Europeans occurred. Punitive expeditions caused many Kaytetye, Warumungu, Anmatjerre, and Alyawarre and Warlpiri people to be killed. This conflict was part of the 