Final answer:
Canada is the other country that has three of the world's largest islands which are Baffin Island, Victoria Island, and Ellesmere Island.
Step-by-step explanation:
The other country that claims three of the world's largest islands in addition to Indonesia is Canada. The three largest Canadian islands are Baffin Island, Victoria Island, and Ellesmere Island. These islands are part of the Canadian Arctic Archipelago and are among the top ten largest islands in the world.