The socioeconomic system and its dynamics are treated in the light of the unified and embedded characteristics of sub-systems that learn from each other, and in this way complement, participate, and thus unify. The Islamic epistemic model of unity of the divine law in ‘everything’ is invoked to develop what we call the Tawhidi phenomenological model of unity of knowledge. This is then applied to the theory of socioeconomic system as a unified and embedded one. Such a system is generated by learning and synergies between the entities of the expanding domains of diverse systems. Within this phenomenological outlook, critical issues of social development, economy, and institutions are treated. The social pillar is formalized and shown as the unique and universal model of the Tawhidi worldview that can be intellectually emulated in the education and socioeconomic development programs of the Muslim World. This chapter points out how the Tawhidi methodological worldview can be practically emulated nationally, regionally, and globally by a decentralization of the World Bank and United Nations Development Program requiring religious, cultural, economic, and political sensitivities.