1. The original name of this product was 'Offiziersmesser.' US soldiers, who couldn't pronounce that, gave it its current name. Which product?

2. What are the Canary Islands named after?

3. The Spanish city of Granada is named after a fruit. Which one?

4. The original name of which famous monument was 'Rauza-i-munavvara' or 'The Illumined Tomb'?

5. Which popular pastime was originally named 'tibromania'?

For the answers, please visit: ten things i didn't know until last week.