This monograph attempts to review the critical theoretical issues concerning Small States and Small Insular Developing States, while aiming to answer some crucial related questions and to distinguish between these two notions. Additionally we attempt to spotlight some issues related to the development of Cape Verde having in consideration a possible comparison with two of the most successful African SIDS, namely Mauritius and Seychelles. A brief analysis of the social and economical situation of the three countries is made, seeking to underline their key development elements and assessing their economical and social structure. This monograph mainly aims at assessing what Cape Verde can apprehend from the Mauritian and Seychellois experience, in an attempt to draw some useful conclusions to its development.