(by the Vedic god Mitra). However, sovereignty permits action in every field; otherwise, it would lose its essential quality. As a further proof, Dumézil cites the story of Tullus Hostilius (the most belligerent of the Roman kings), who was killed by Jupiter with a lightning bolt (indicating that he did not enjoy the god's favour). Varro's definition of Jupiter as the god who has under his jurisdiction the full expression of every being (penes Iovem sunt summa) reflects the sovereign nature of the god, as opposed to the jurisdiction of Janus (god of passages and change) on their beginning (penes Ianum sunt prima). Relation to other gods Capitoline Triad The Capitoline Triad was introduced to Rome by the Tarquins. Dumézil thinks it might have been an Etruscan (or local) creation based on Vitruvius' treatise on architecture, in which the three deities are associated as the most important. It is possible that the Etruscans paid particular attention to Menrva (Minerva) as a goddess of destiny, in addition to the royal couple Uni (Juno) and Tinia (Jupiter). In Rome, Minerva later assumed a military aspect under the influence of Athena Pallas (Polias). Dumézil argues that with the advent of the Republic, Jupiter became the only king of Rome, no longer merely the first of the great gods. Archaic Triad The Archaic Triad is a hypothetical theological structure (or system) consisting of the gods Jupiter, Mars and Quirinus. It was first described by Wissowa, and the concept was developed further by Dumézil. The three-function hypothesis of Indo-European society advanced by Dumézil holds that in prehistory, society was divided into three classes: {| class=wikitable |+ Dumézil's trifunctional hypothesis as applied to Roman religion |- style="vertical-align:bottom;" ! Function !! Subfunction !! Description !! Example Roman god |- !rowspan="3;" style="vertical-align:center;"| 1 !! |style="vertical-align:top;"| sovereignty |style="vertical-align:top;"| Jupiter |- style="vertical-align:top;" ! 1 (a) | judicial || Jupiter / Fides / Dius Fidius |- style="vertical-align:top;" ! 1 (b) | religious || Veiovis, Janus; Fortuna |- !rowspan="3;" style="vertical-align:center;"| 2 !! |style="vertical-align:top;"| warriors |style="vertical-align:top;"| Mars |- style="vertical-align:top;" ! 2 (a) | protection || Minerva (Pallas Athena), Castor and Pollux; Mars, Roma |- style="vertical-align:top;" ! 2 (b) | raids and conquest || Bellona, Mars, |- !rowspan="6;" style="vertical-align:center;"| 3 !! |style="vertical-align:top;"| production of wealth |style="vertical-align:top;"| Quirinus, Saturnus, Ops; Penates |- style="vertical-align:top;" ! 3 (a) |style="vertical-align:top;"| crop farming |style="vertical-align:top;"| Saturnus, Dīs Pater, Ceres, Tellus; Quirinus |- style="vertical-align:top;" ! 3 (b) | animal husbandry ||