The international system is for the most part made up by small powers or small states. While a small power in the international system may never equal or surpass the effect of larger powers, they can nevertheless influence the workings of the international system together with others. The formalization of the division between small and great powers came about with the signing of the Treaty of Chaumont in 1814. Before that the assumption had been that all independent states were in theory equal regardless of actual strength and responsibilities.
According to a 2017 review study, "What scholars can agree on is that small states generally prefer multilateralism as both a path to influence and a means to restrain larger states. Studies of influential small states indicate that they are able to develop issue-specific power to make up for what they lack in aggregate structural power. Small states can, therefore, develop power disproportionate relative to their size on the few issues of utmost importance to them. In addition to prioritization, small states have successfully employed the strategies of coalition-building and image-building. Even though small state administrations lack the resources of their larger counterparts, their informality, flexibility, and the autonomy of their diplomats can prove advantageous in negotiations and within institutional settings."
