Book excerpt: Most discussions of US decline in global politics couch their arguments and evidence in the most contemporary context. But the US follows a global lineage that has been emerging and evolving for centuries. In 'American Global Pre-Eminence', William R. Thompson argues that systemic leadership is based on a pecking order established by leads in technological innovation, energy, and global reach. The ultimate irony is that as it becomes clearer how these variables interact, the processes under scrutiny may be fundamentally transforming. Thompson asks whether it remain possible for a single state to lead the global system as in the past.