Rainier Prince Rainier of Monaco ruled for nearly 56 years; Mt Rainier is south-east of Seattle in Washington, USA, and is on the international list of 16 volcanoes needing close study.
Lawnmower racing as a sport took off in the second half of the 20th century in the UK, USA and Australia; what reason was quoted in the UK?
The House of Bourbon, a European royal house one of whose monarchs was famously guillotined in France in 1792, has descendants currently on the throne of which country or countries?