post-imperial          
adjective  politics specialized (also post-Imperial, postimperial) uk/ˌpəʊst.ɪmˈpɪə.ri.əl/ us/ˌpoʊst.ɪmˈpɪr.i.əl/
 后帝国时代
in or relating to a period after the end of imperial rule (= the control of a group of countries by another country under a single ruler in an empire)
  His works chronicle post-Imperial Russia. 他的作品记录了后帝国时代的俄罗斯。 
 The Roman Senate continued to function during the post-imperial period.
  后大英帝国时代
in or relating to a period after the British Empire stopped existing
  He was looking for a way in which post-imperial Britain could continue to assert its authority on the world. 他在寻找一种方式,使后帝国时代的英国可以继续在世界上宣示其权威。 
 The crisis illustrated the confusion regarding Britain's post-imperial role.
 Compare: postcolonial
 - More examples
- Post-imperial and post-colonial historians have found little to praise in the motives and impacts of western empires.
- The book is set in post-Imperial and post-Nazi Austria.
- The influence of the Ottoman empire is still very much alive in post-imperial Turkey.
- The postimperial political order was discussed.
- He lived through the imperial and post-imperial periods in British history.
- They discussed the UK's post-imperial decline as a manufacturing nation.