Which Commonwealth member state transitioned into a republic in 2021, removing the British monarch as its head of state?

Explanation

In November 2021, Barbados officially became a republic, ending its status as a constitutional monarchy under the British Crown. This historic transition saw the removal of Queen Elizabeth II as the head of state and the inauguration of the country's first president. This move was seen as a significant step in the nation's post-colonial development and the assertion of its full sovereignty.