This index is a comprehensive reference guide to the concepts, policies, and institutions that define and influence global USD hegemony. It covers the full spectrum—from monetary theory, money circulation models, and cross-border payment infrastructure to digital currency innovation and geopolitical strategy—while mapping the key stakeholders shaping each domain, from central banks and government agencies to international bodies and private sector innovators. Together, these terms and relationships form the strategic landscape for strengthening the U.S. dollar’s dominance in a rapidly evolving digital economy.