While scholar have long posited that democratization is influenced by international interaction, this relationship has usually been black-boxed in percentages of regional democracies or limited to descriptions of specific contexts. Large-N explorations have necessarily been limited by the monadic nature of most comparative politics data. This study looks at the influence of international interaction on regime type from a dyadic perspective; exploring whether trade, region, culture, distance, economic performance, and domestic similarity affect the probability and degree of institutional convergence or divergence. The results obtained thus far suggest that the intensity of interaction between states makes a large difference in their degree of convergence from in both one and three-dimensional space from 1816 to 2008