Deter a tour abroad that caravans might have taken (5,5)
I believe the answer is:
trade route
'caravans might have taken' is the definition.
I can't tell whether this definition defines the answer.
'deter a tour abroad' is the wordplay.
'abroad' is an anagram indicator.
'deter'+'a'+'tour'='deteratour'
'deteratour' with letters rearranged gives 'TRADE ROUTE'.
'that' acts as a link.
Can you help me to learn more?
(Other definitions for trade route that I've seen before include "Way followed by merchants" , "Caravans may follow it" , "path of traffic" , "Mercantile artery" .)