Student or Learner
It is no longer a question whether/that this great country can remain happily united and flourish under our present form of government.
Are both 'whether' and 'that' fine for this sentence? Is there any possibility of them being of different meaning in sentences?
Could I ask native speakers to help me please? Thank you in advance.
It is no longer a question of whether this great country can remain...
'that' is not possible.