Thrifty management of nation's resources and finances (7)
I believe the answer is:
economy
'thrifty management' is the definition.
(I've seen this in another clue)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for economy that I've seen before include "Frugality" , "Thrift - national production, distribution and consumption" , "Careful expenditure" , "being frugal" , "A country's system of production, distribution and consumption" .)