The Strength of Nations Index measures comprehensive national power across G20 member countries. The index utilizes its proprietary EPIC^x Framework; this algorithmic model evaluates national capability across five core Pillars: 'Economic Capacity Index', 'Power & Defense Index', 'Institutional Stability Index', 'Civil Capability Index', and 'X Space, AI & Frontier Technology Index'. Accordingly, each pillar is an index in-itself; hence referred to as 'Pillar Indexes'. To further support geo-political, economic, and strategy researchers these pillar indexes are further divided into 19 'Sub-Pillar Indexes'. The entire framework utilizes 63 benchmark indicators, from sources such as the World Bank, UN, and National Archives, from 1998 to the recently concluded year, thus comprehensively mapping all facets of national strength for each G20 member country.