A. The government completely lost control of its territory.
Cambodia and Vietnam are not island nations: they are not placed on islands, but on the Indochina Peninsula in Asia - so they can't be the correct answer
Indonesia is an island nation, but it's a presidential republic, not a monarchy.
The correct answer is Brunei
The current, and 23rd, Prime Minister of Canada is the Liberal Party's Justin Trudeau, who was appointed on November 4, 2015, by Governor General David Johnston, following the general election that took place that year.
Answer:
a very powerful and influential nation (used especially with reference to the US and the former Soviet Union when these were perceived as the two most powerful nations in the world).