Question

Passage A
For over a century, scholars have sought a definitive causal mechanism to explain the rapid depopulation and institutional abandonment of the southern Maya lowlands. The late Classic Maya collapse, traditionally one of the most vigorously debated phenomena in Mesoamerican archaeology, has increasingly been attributed to severe, multi-decadal droughts. Paleoclimatological data derived from speleothems, lake sediments, and marine cores unequivocally indicate that the period between 800 and 1000 CE experienced unprecedented, protracted deficits in precipitation across the Yucatán Peninsula. The resultant agricultural shortfall would have immediately and severely compromised the densely populated, hyper-urbanized centers, which relied heavily on intensive, water-dependent maize agriculture cultivated through raised fields and terracing. Consequently, the centralized political apparatuses, unable to mitigate the profound subsistence crisis or fulfill the ideological mandate of guaranteeing agricultural fertility through ritual intercession, rapidly disintegrated as populations dispersed. Without the surplus necessary to sustain non-producing elites and specialists, the intricate socio-economic hierarchies that defined Classic Maya civilization could no longer be maintained. This deterministic sequence—climatological shock precipitating catastrophic agricultural failure, which in turn catalyzes immediate institutional collapse—provides a robust, empirically grounded paradigm. It effectively supersedes earlier, largely speculative hypotheses centering on internal social revolt, endemic inter-polity warfare, or systemic ecological overshoot. The environmental determinist model thus effectively and elegantly maps the historical trajectory from an exogenous trigger to total systemic breakdown.

Passage B
The recent paradigm shift toward paleoclimatology in Mesoamerican archaeology has undoubtedly enriched our understanding of the Terminal Classic environment. While the paleoclimatological record of severe Terminal Classic droughts is empirically unassailable, elevating environmental stress to the status of a primary, monocausal explanation for the Maya collapse is profoundly reductive. Such models mistakenly predicate their conclusions on the assumption that complex sociopolitical structures act merely as passive receptacles for exogenous shocks, ignoring the internal dynamics that dictate a society's resilience or vulnerability. A more rigorous structural analysis demonstrates that by the late eighth century, the political landscape of the Maya lowlands was already characterized by dangerous hyper-coherence and profound institutional fragility. Decades of escalating, endemic elite competition, coupled with the attendant proliferation of resource-draining monumental construction and the burdensome maintenance of expanding royal courts, had fatally depleted the adaptive resilience of these polities. This structural rigidity meant that the complex networks of trade and alliance, which had previously buffered individual cities against localized failures, were compromised and operating at their absolute limits. Thus, when environmental stressors materialized in the form of prolonged droughts, they did not unilaterally cause the collapse; rather, they functioned merely as accelerants along pre-existing, deep-seated socio-economic fault lines. The ensuing fragmentation was less a direct, mechanical consequence of crop failure than a profound ideological repudiation of the elite class. The ruling class's inability to navigate compounding crises irrevocably shattered the legitimacy of divine kingship, demonstrating that the collapse was ultimately an endogenous political failure rather than an exogenous climatic inevitability.

Analyze the argumentative structure of both passages. Order the following rhetorical and structural moves chronologically in the exact sequential order in which they appear as one reads from the beginning of Passage A to the conclusion of Passage B.