What the Atlas does
For every economy present in the underlying trade data, the same import-dependency logic as the EU and French pages is run independently: statistically vulnerable products are identified, then weighted by each country's GDP so that a dependency matters more for a small economy than for a large one, with extra weight given to products that sit further upstream in the value chain (a disruption there has more room to cascade). The mirror calculation is run on the export side — how much leverage a country holds over others through its own exports, again GDP-weighted. Dividing the two gives a single openness/vulnerability ratio per country (the DBS: Dependency Balance Score) — a high DBS means a country is structurally more import-dependent than it is export-powerful, a low DBS the reverse.