Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Ebe ahụ: E biri Van Diemen's Land, nke a maara ugbu a dị ka Tasmania, na 1803, mgbe e nwesịrị mgbalị kụrụ afọ n'ala na Sullivan Bay n'ebe bụzi Victoria. Obodo ndị ọzọ nke ndị Briten sochiri, n'ebe dị iche iche gburugburu kọntinent ahụ, ọtụtụ n'ime ha enweghị ihe ịga nke ọma. Kọmitii Azụmaahịa nke East India tụrụ aro na 1823 ka e guzobe ebe obibi n'ụsọ oké osimiri nke ebe ugwu Australia iji gbochie ndị Dutch, na Captain J.J.G. Bremer, RN, ka e nyere ọrụ ka e guzobe ebe obibi n'etiti Bathurst Island na Cobourg Peninsula. Bremer doziri ebe obibi ya na Fort Dundas na Melville Island na 1824 ma, n'ihi na nke a dị n'ebe ọdịda anyanwụ nke ókèala ekwuputara na 1788, kwupụtara ọbụbụeze Britain n'ókèala niile dị n'ebe ọdịda anyanwụ dị ka longitude 129 ° East. N'afọ 1826, ndị Briten kwuru na ha ga-eketa kọntinent Ọstrelia dum mgbe Major Edmund Lockyer guzobere ebe obibi na King George Sound (ihe ndabere nke obodo Albany n'oge na-adịghị anya), mana oke ọwụwa anyanwụ nke Western Australia nọgidere na-agbanwe agbanwe na longitude 129 ° East. N'afọ 1824, e guzobere ebe a na-edebe ndị omekome n'ebe dị nso n'ọnụ Osimiri Brisbane (ebe e si nweta ebe e mechara nweta obodo Queensland). Na 1829, Swan River Colony na isi obodo ya nke Perth ka e guzobere n'ụsọ oké osimiri ọdịda anyanwụ nke ọma ma na-achịkwa King George Sound. Na mbụ, ebe a na-achị onwe ya, Western Australia mechara nabata ndị mkpọrọ si Britain, n'ihi oke ụkọ ọrụ.  Ajụjụ: N'ihi gịnị ka Western Australia ji mechaa nabata ndị mkpọrọ si Britain?
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