Student or Learner
What's the difference between ''Britain's defence minister'' and ''the British defence minister'', and why the first statement is more common- at least to very best of my knowledge?
Although you will hear "the British Defence Minister", it is slightly ambiguous. "British" refers to nationality so it could be read to mean "the Defence Minister who happens to be British" rather than "the minister in charge of the Ministry of Defence in Britain".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.