No precise count exists, but historians estimate tens of thousands to hundreds of thousands of Aboriginal and Torres Strait Islander people were killed directly or indirectly following British colonization (1788 onward). Causes:
Pre-contact population: 300,000–1,000,000+. By 1900, reduced to ~60,000–90,000. The term "frontier wars" and "genocide" are debated but widely acknowledged in scholarship. Truth-telling processes (e.g., Yoo-rrook Justice Commission in Victoria) continue.