Context: In 1816, the United Kingdom annexed the islands, ruling them from the Cape Colony in South Africa. This is reported to have primarily been a measure to ensure that the French would be unable to use the islands as a base for a rescue operation to free Napoleon Bonaparte from his prison on Saint Helena. The occupation also prevented the United States from using Tristan da Cunha as a cruiser base, as it had during the War of 1812.

Question: in what year did the UK annex the islands?
Answer: 1816

Question: where did the UK rule the islands from?
Answer: South Africa

Question: In what year did the islands annex the United Kingdom?
Answer: Unanswerable

Question: From where did the islands rule the United Kingdom?
Answer: Unanswerable

Question: When were the islands annexed by Napoleon Bonaparte?
Answer: Unanswerable

Question: Where was the prison of Tristan da Cunha located?
Answer: Unanswerable

Question: What prevented the US from using Napoleon Bonaparte as a cruiser base?
Answer: Unanswerable