The Middle East and North Africa have experienced mass protests and political changes since the end of 2010. Indeed, the uprisings were a decisive turning point in the history of the Arab world. Although the leading causes of the revolts appear to be similar, as they result from political repression and socioeconomic grievances, their outcomes were highly different, and thus each state has developed a distinct state-building process. This article aims to explain one of the main factors that led to these divergences by comparing the role of “social cohesion” in Tunisia’s and Libya’s uprisings. The study concludes that, while the strength of social cohesion in Tunisia has fostered the role of civil society and thus explains to a certain degree the relative success of democratic transition in the country, the weakness of social cohesion in Libya has damaged the social fabric and therefore increased the emergence of tribal conflicts in the post-transition era.