Question: What other country was the queen who launched Dannebrog, also a queen for between 1918 and 1944?
Facts:
Her Danish Majesty's Yacht "Dannebrog was launched by Queen Alexandrine
Alexandrine of Mecklenburg-Schwerin was Denmark Queen as the spouse of King Christian X.
Alexandrine of Mecklenburg-Schwerin was also Queen of Iceland.
Answer: Iceland