"Der Franken" translates to English as "The frank" Any idea what this means?
If I would read "Der Franken" somewhere, I'd expect that actually the correct translation is "The Swiss franc" -- but impossible to say without context. I have no clue what "The frank" means.
I guess, they are referring to the currency.
"Der Franken" means 'the (not necessarily Swiss) franc'. You may want to report the spelling error to duolingo. Or the German is wrong and they mean 'Der Franke' (the frank, member of a historical West Germanic nation).
I thought this could be "the Frenchman". Is that not what a Frank is?
A French person is called "Franzose" (man) "Französin" (woman) or araichally "Franzmann" (today this may be understood pejoratively)..