This chapter argues that global history is not a self-contained field but one in need of theoretical and terminological support from various parts of the systematic social sciences. A strong candidate for conceptual inputs is historical sociology—an old discourse that originated with the founding fathers of sociology and can in turn profit from a close attachment to global history. Different kinds of global history require their respective conceptual tools many of which can be provided by a historical sociology that keeps a balance between the richness of anthropological description and the formalism of network analysis. A particularly fruitful topic of mutual interest is that of time and temporalities.