“…To capture the quality of judicial institutions, we rely on survey information regarding the perceived corruption of the judicial system from the Varieties of Democracy Institute (see Pemstein et al, 2022). In an extension, we consider as an alternative the rule of law index from the Worldwide Governance Indicators (Kaufmann et al, 2010), which has been used for explaining the level and structure of bilateral trade flows in previous research (see Levchenko, 2007;Nunn, 2007;Ferguson and Formai, 2013). Beyond that, we also control for the share of preferential duty lines on inputs granted by the importer country to capture in a simple way the degree of bilateral integration prior to the formation of a TA, thereby acknowledging the qualification of our first hypothesis (see above).…”