Not a fifth lens, but the point the whole engine exists to make: historians describe the same country differently because they weigh its causes differently.
The sharpest dispute concerns Juan Manuel de Rosas and the “Conquest of the Desert.” The consensus and cultural readings largely retain the older judgment that Rosas was an authoritarian strongman whose fall in 1852 cleared the way for constitutional government, and that the 1878–1885 campaigns extending state control over the Pampas and Patagonia were a “conquest” that built the modern country. The revisionist reading recasts Rosas as a defender of national sovereignty against foreign blockade, and reframes the same campaigns as a colonising war of dispossession that some historians now call genocide. Same set of facts, opposite verdicts on who was defending the nation and who was attacking it.
Peronism produces a second genuine three-way split. Political-science-inflected consensus accounts read it chiefly as populism organised around a charismatic leader who redirected loyalty from constitutional institutions to himself; the cultural and political reading treats it as a genuine redefinition of who counted as fully Argentine; revisionist social history treats it as evidence of working-class self-organisation rather than manipulation from above. Same movement, three different engines proposed to explain it.
On one point all four perspectives agree: the Argentine state took shape before a settled national identity did. They part only on what did the binding — constitutional compromise and military settlement, dispossession and foreign capital, a contested story about civilisation and belonging, or the physical infrastructure of a single dominant export port.
Reference status: every work cited is verified and correctly attributed — David Rock, Argentina 1516–1987: From Spanish Colonization to Alfonsín (University of California Press, 1987); Luis Alberto Romero, A History of Argentina in the Twentieth Century, trans. James P. Brennan (Pennsylvania State University Press, 2002; updated and revised ed. 2013); Michael Goebel, Argentina’s Partisan Past: Nationalism and the Politics of History (Liverpool University Press, 2011); Daniel James, Resistance and Integration: Peronism and the Argentine Working Class, 1946–1976 (Cambridge University Press, 1988); Nicolas Shumway, The Invention of Argentina (University of California Press, 1991); Federico Finchelstein, The Ideological Origins of the Dirty War: Fascism, Populism, and Dictatorship in Twentieth Century Argentina (Oxford University Press, 2014); Roberto Cortés Conde, The Political Economy of Argentina in the Twentieth Century (Cambridge University Press, 2009); Jeremy Adelman, Frontier Development: Land, Labour, and Capital on the Wheatlands of Argentina and Canada, 1890–1914 (Oxford University Press / Clarendon Press, 1994). The characterisation of the 1878–1885 “Conquest of the Desert” as a possible genocide is presented as a contested, actively debated historiographical claim, not as an established verdict. The endpoint coda’s 2026 diplomatic and sporting claims are drawn from search-based research only and are separately flagged above for independent verification.