Mabo V Queensland [No 2] (1992): The Fractured Overturning Of Terra Nullius
BIBBULLMUN SOVEREIGN NATION ARCHIVE • INDIGENOUS & ABORIGINAL CUSTOMARY LAW, NOONGAR & NYUNGAR ETHNOHISTORY, SOUTH-WEST WESTERN AUSTRALIA
Citation: Bibbullmun.com.au, 'Mabo v Queensland [No 2] (1992): The Fractured Overturning of Terra Nullius' (2026) Bibbullmun Sovereign Nation Archive <https://www.bibbullmun.com.au/law-critique/native-title/mabo/mabo-terra-nullius.php>.
TABLE OF CONTENTS
Mabo v Queensland [No 2] (1992): The Fractured Overturning of Terra Nullius
Jurisprudential Critique of Radical Title: The High Court's Rejection of Terra Nullius, The Preservation of Crown Sovereignty and Inherent Title Vulnerability
1. The Judicial Rejection of Terra Nullius
The decision of the High Court of Australia in Mabo v Queensland [No 2] (1992) is celebrated as a monumental breakthrough in Australian legal history for formally overturning the doctrine of terra nullius—the legal fiction that Australia was an unoccupied wasteland at British annexation in 1788.[1][2]By a six-to-one majority, the High Court recognised that the Meriam people of the Torres Strait (and by extension First Nations across the continent) possessed a sui generis property right termed Native Title, rooted in traditional law and custom that pre-dated British sovereignty and survived the Crown's acquisition of radical title.[1][3]
| Legal Doctrine | Pre-Mabo Doctrine | Mabo [No 2] Reformulation | Sovereign Jurisprudential Limit |
|---|---|---|---|
| Terra Nullius | Continent legally empty; Crown absolute owner of all land | Overturned; Indigenous rights acknowledged | Crown sovereignty declared immune from judicial challenge |
| Radical Title | Conferred absolute beneficial ownership to Crown | Radical title confers sovereignty, not automatic ownership | Crown retains unilateral executive power to extinguish Native Title |
| Customary Law (Karratj) | Dismissed as barbaric or legally non-existent | Recognised as source of Native Title rights | Subordinated to Crown statutes; frozen in pre-contact molds |
2. Brennan J's Fractured Compromise
Despite overturning terra nullius, Brennan J's leading judgment introduced a profound constitutional contradiction.[1][5] The Court held that while municipal courts could recognise Indigenous customary property rights, the acquisition of Crown sovereignty itself was an 'Act of State' that could never be challenged or questioned in domestic courts.[1][4]By shielding the British Crown’s unilateral assertion of sovereignty from judicial scrutiny, the Court effectively substituted an old fiction with a new one: that the Crown acquired absolute sovereign title over unceded nations by mere proclamation, without conquest, treaty, or international law compliance.[4][5]
3. Radical Title as an Instrument of Vulnerability
The High Court’s concept of radical title subordinated Native Title to settler state power.[1][3] Brennan J explicitly ruled that Native Title was not an inalienable sovereign right, but a fragile, vulnerable interest liable to be extinguished at the whim of Crown executive actions or inconsistent statutory grants without common law compensation.[1][5]For the Bibbullmun Sovereign Nation, this meant that century-old colonial land grants were confirmed as having permanently extinguished customary title, leaving unceded sovereignty unrecognized within Australian domestic law.[2][3]
Complete AGLC4 Footnotes & Master References
All primary colonial dictionary entries, legal precedents, and archival sources for this monograph are documented on the dedicated footnotes page.
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