America's revolutionary baloney sandwiches (4)
I believe the answer is:
subs
'sandwiches' is the definition.
(sub is a kind of sandwich)
'america's revolutionary baloney' is the wordplay.
'america's' becomes 'US'' ('US' can be a synonym of 'america').
'revolutionary' says the letters should be written backwards (letters revolve around).
'baloney' becomes 'bs' (I can't justify this - if you can you should believe this answer much more).
'us' in reverse letter order is 'su'.
'su'+'bs'='SUBS'
Can you help me to learn more?
(Other definitions for subs that I've seen before include "Players in reserve" , "vehicles" , "Advance payments" , "Club members' payments" , "Reserves at football (sl.)" .)