Indigenous Australians led by Pemulwuy also conducted Action raids Attack around Parramatta during the period between 1795 and 1802 .

This , combined Cause_to_be_included with the introduction of new diseases such as smallpox , caused Causation resentment within the Aboriginal clans against the British and resulted in Causation violent Violence confrontations Hostile_encounter , coordinated by men such as Pemulwuy .