The term Commonwealth stood out when they gave Alison her verdict. So researched it. Read below.
“The English noun "commonwealth” in the sense meaning “public welfare; general good or advantage” dates from the 15th century. The original phrase “the common-wealth” or “the common weal” (echoed in the modern synonym “public weal”) comes from the old meaning of “wealth”, which is “well-being”, and is itself a loose translation of the Latin res publica (republic). The term literally meant “common well-being”. In the 17th century the definition of “commonwealth” expanded from its original sense of “public welfare” or “commonweal” to mean “a state in which the supreme power is vested in the people; a republic or democratic state”.
The Icelandic Commonwealth or the Icelandic Free State (Icelandic: Þjóðveldið) was the state existing in Iceland between the establishment of the Althing in 930 and the pledge of fealty to the Norwegian king in 1262. It was initially established by a public consisting largely of recent immigrants from Norway who had fled the unification of that country under King Harald Fairhair.
The Commonwealth of England was the official name of the political unit (de facto military rule in the name of parliamentary supremacy) that replaced the Kingdom of England (after the English Civil War) from 1649–53 and 1659–60, under the rule of Oliver Cromwell and his son and successor Richard. From 1653 to 1659, although still legally known as a Commonwealth, the republic, united with the former Kingdom of Scotland, operated under different institutions (at times as a de facto monarchy) and is known by historians as the Protectorate. The Commonwealth of England formed the first republic in the English-speaking world. In an English context, it is sometimes referred to as the “Old Commonwealth”.
Four states in the United States officially designate themselves as “commonwealths”. All four were original colonies or parts thereof (Kentucky was originally a part of the land grant of the Colony of Virginia) and share a strong influence of colonial common law in some of their laws and institutions. The four are:
Kentucky is designated a Commonwealth by the Kentucky Constitution and is known constitutionally as the “Commonwealth of Kentucky”.
Massachusetts is a Commonwealth, declaring itself as such in its constitution, which states: “[T]he body politic is formed by a voluntary association of individuals: it is a social compact, by which the whole people covenants with each citizen, and each citizen with the whole people, that all shall be governed by certain laws for the common good.”
PENNSYLVANIA uses the “Commonwealth of Pennsylvania” constitutionally and in its official title.
Virginia has been known as the “Commonwealth of Virginia” since before joining the United States, and is referred to as a Commonwealth in its constitution.“
So……in the US only 4 states use this and PA is one of them. Then ICELAND & ENGLAND.