Micro-sovereignties have become increasingly important for States seeking to strengthen their territorial control. Micro-sovereignties can have a disproportionate impact in relation to their size and the number of inhabitants that support them. This article offers a definition of the concept of micro-sovereignties and provides criteria for identifying and qualitatively assessing them. It is shown that, in addition to being a challenge to the sovereignty of nations, they also represent an opportunity, especially in democratic regimes, to strengthen sovereignty through networks of pow-er that cooperate with micro-sovereignties, considering their strengths in terms of moral authority and links with the population.