It could confuse men in a whole continent (7)
I believe the answer is:
amnesia
'it' is the definition.
The definition suggests a singular noun which matches the answer.
'confuse men in a whole continent' is the wordplay.
'confuse' indicates anagramming the letters.
'in' indicates putting letters inside.
'a whole continent' becomes 'asia' (Asia is an example. I am not sure about the 'whole' bit.).
'men' with letters rearranged gives 'mne'.
'mne' going into 'asia' is 'AMNESIA'.
'could' acts as a link.
Can you help me to learn more?
(Other definitions for amnesia that I've seen before include "memory problem" , "Elephants won't suffer such" , "Main sea (anag.)" , "Clinical loss of memory" , "Clinical state of forgetfulness" .)