mir ri , ▁D h ulu ḏ ur , ▁May alth a ▁and ▁Gu <0xE1> <0xB9> <0x89> mul . ▁ ▁History ▁ ▁Mac ass an ▁contact ▁ ▁Y ol ŋ u ▁engaged ▁in ▁extensive ▁trade ▁ann ually ▁with ▁Mac ass an ▁fish erm en ▁at ▁least ▁two ▁centuries ▁before ▁contact ▁with ▁Europe ans . ▁They ▁made ▁year ly ▁vis its ▁to ▁har vest ▁tre p ang ▁and ▁p ear ls , ▁pay ing ▁Y ol ŋ u ▁in ▁kind ▁with ▁goods ▁such ▁as ▁kn ives , ▁metal , ▁can o es , ▁to b acco ▁and ▁pip es . ▁In ▁ 1 9 0 6 , ▁the ▁South ▁Australian ▁Government ▁did ▁not ▁renew ▁the ▁Mac ass ans ' ▁permit ▁to ▁har vest ▁tre p ang , ▁and ▁the ▁dis ruption ▁caused ▁economic ▁losses ▁for ▁the ▁regional ▁Y ol ŋ u ▁economy . ▁ ▁Y ol ŋ u ▁or al ▁histor ies ▁and ▁the ▁Dj ang g aw ul ▁myth s ▁preserve ▁accounts ▁of ▁a ▁Ba ij ini ▁people , ▁who ▁are ▁said ▁to ▁have ▁preced ed ▁the ▁Mac ass ans . ▁These ▁Ba ij ini ▁have ▁been ▁various ly ▁interpreted ▁by ▁modern ▁research ers ▁as ▁a ▁different ▁group ▁of ▁( pres umably , ▁S out heast ▁Asian ) ▁visitors ▁to ▁Australia ▁who ▁may ▁have ▁visited ▁Arn hem ▁Land ▁before ▁the ▁Mac ass ans , ▁as ▁a ▁myth ological ▁reflection ▁of ▁the ▁experiences ▁of ▁some ▁Y ol ŋ u ▁people ▁who ▁have ▁travel led ▁to ▁Sul aw esi ▁with ▁the ▁Mac ass ans ▁and