Was the commonwealth a success or failure? Why or why not?

The commonwealth is a success.

Explanation:

The Commonwealth is one of the world's oldest political association of states. It's origin goes back to the British Empire when many countries were under the British rule. Initially they formed the British Commonwealth of Nations and later in 1949 the association we know today, the Commonwealth came into being.

As per the current scenario Commonwealth can be described as an association of independent nations which have freely come together to cooperate among each other for the benefit of their citizens.