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I present the Relational-Informational Model (RIM), a unified framework in which all four fundamental interactions emerge from a single quantum-informational ob- ject: the mixed-state Quantum Geometric Tensor (msQGT) of an observer’s reduced density matrix ρObs = TrSys |Ψ⟩⟨Ψ|, defined within a globally static universe satis- ˆ fying the Wheeler–DeWitt constraint Htot |Ψ⟩= 0. The real part of the msQGT—the Quantum Fisher Information Matrix (QFIM)— defines the emergent spacetime metric via the Bures distance. A precise modular- flow criterion (Proposition 3.2) justifies the Riemannian truncation of the fidelity expansion and distinguishes the RIM construction from holographic approaches in which the QFIM of a boundary CFT state is dual to bulk geometry in AdS/CFT. The Einstein field equations are derived by requiring the First Law of Entanglement Entropy to hold on every local causal horizon constituted by the modular Hamilto- nian K=−log ρObs; the Rindler zero-flux concern is resolved by showing that the derivation operates at the level of modular energy, not classical radiative flux.The imaginary part of the msQGT—the Uhlmann curvature—naturally pro- duces Yang–Mills gauge structure. The gauge group is not postulated but derived from the eigenvalue degeneracy structure of ρObs: non-degenerate spectra yield U(1) electromagnetism; two-fold degeneracy yields SU(2) weak interactions; three- fold degeneracy yields SU(3) colour symmetry, giving Ggauge = U(1) ×SU(2) × SU(3). The physical reality of the Uhlmann holonomy—and the identification of degeneracy-induced informational indistinguishability with gauge redundancy— resolves the key conceptual tension. Explicit qubit and qutrit toy-model calculations confirm the framework, including the emergence of the Bloch sphere metric with Gaussian curvature K= 4 and the Fubini–Study metric on CP2. A unified ac- tion whose variation yields simultaneously the Einstein and Yang–Mills equations is constructed. Open problems including fermion generations, mass hierarchy, and the cosmological constant are discussed with full transparency.