evidence: The British Empire established a penal colony at Botany Bay in 1788. In the 150 years that followed, the number of Indigenous Australians fell sharply due to introduced diseases and violent conflict with the colonists. From the 1930s, the Indigenous population began to recover and Indigenous communities founded organisations to advocate for their rights. From the 1960s, Indigenous people won the right to vote in federal and state elections, and some won the return of parts of their traditional lands. In 1992, the High Court of Australia, in the Mabo Case, found that Indigenous native title rights existed in common law. By 2021, Indigenous Australians had exclusive or shared title to about 54% of the Australian land mass.[22]