Parliamentary vs Unitary: Australia vs Vietnam

How their governments are structured

Australia is a federal parliamentary constitutional monarchy; Vietnam is a unitary state. The first practical split is federalism: Australia is a federation, so legislative power is shared with constituent states or Länder, and a single national majority can be blocked by sub-national institutions and courts. Vietnam is unitary — the central government can change policy nationwide without negotiating with state-level legislatures. The second split is how the executive is chosen. Australia runs a parliamentary system: the head of government (a prime minister or chancellor) holds office only as long as they keep the confidence of the lower house, and a successful no-confidence vote forces resignation or new elections. Vietnam's executive does not fit cleanly into the standard parliamentary, presidential, or one-party templates. The practical effect is that Australia and Vietnam produce executives with different routes to power and different ways of losing it. Australia keeps a hereditary monarch as head of state — a largely ceremonial role distinct from the head of government — while Vietnam fuses or separates these roles within an elected office instead. The substantive difference is mostly symbolic and constitutional-emergency reserve powers, not day-to-day politics.