I'm not an expert on this but I'm speculating "fracking"
Which uses high water pressure to extract the coal.
Colonist had won their freedom from the British so them being there was basically a threat.
Answer:
B: The vast majority of Aborigines now live in cities.
Explanation:
In 2016 the majority (81%) of Aboriginal people lived in cities and non-remote areas, up from 75% in 2006.
