Initially coax United States to overcome mismanaged trade (6)
I believe the answer is:
custom
'trade' is the definition.
(I know that custom is a type of trade)
'initially coax united states to overcome mismanaged' is the wordplay.
'initially' indicates taking the first letters.
The initial letters of 'coax united states to overcome mismanaged' is 'CUSTOM'.
(Other definitions for custom that I've seen before include "Local habit" , "Habit, usage" , "Usual practice" , "Regular trade" , "Traditional habit" .)