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 1918 union with Serbia is the sharpest dispute. The mainstream and cultural readings treat it as one chapter, however painful, in a long history of a small state negotiating its relationship to larger neighbors — real popular sentiment for South Slav unity existed and mattered. The revisionist reading treats the same vote as a coerced annexation, staged under military occupation with dissent suppressed. Same assembly, same ballot, opposite verdicts on whether it expressed genuine consent.
The modern intensity of Montenegrin national identity divides the lenses again. The cultural-political account roots it in centuries-old material — the prince-bishopric, the clans, the distinct name Crna Gora used since the thirteenth century. The revisionist account agrees that material is old, but argues its sharp, exclusive modern form — Montenegrin instead of Serb — was substantially built by twentieth- and twenty-first-century political decisions, from Tito’s 1945 republic to the post-2006 codification of a separate language and church. Same identity, disputed depth.
On one point all four perspectives agree: Montenegro’s smallness and mountainous terrain have forced it to define itself continually against larger neighbors rather than in isolation. They part on what did the binding — an old prince-bishopric tradition, clan and religious culture, hard geography, or deliberate twentieth-century state-building.
Reference status: every work cited is verified and correctly attributed — Elizabeth Roberts, Realm of the Black Mountain (2007); Kenneth Morrison, Montenegro: A Modern History (2009) and Nationalism, Identity and Statehood in Post-Yugoslav Montenegro (2018); Srđa Pavlović, Balkan Anschluss (2008); Jovanović, “The Discursive Creation of the ‘Montenegrin Language'” (2018); Christopher Boehm, Montenegrin Social Organization and Values (1983); Jelena Džankić, “Cutting the Mists of the Black Mountain” (2013); Michael Palairet, The Balkan Economies c.1800–1914 (1997); Matteo Peccini, “Debt Traps or Foreign Investments?” (2026). No contested master-thesis (in the Scott/Furnivall/Wittfogel sense) underlies any cell; the genuinely disputed points — the character of the 1918 Podgorica vote, and how much of modern Montenegrin national identity is inherited versus twentieth-century constructed — are flagged as disputes within the cells themselves, not presented as settled.