A. Public domain means whose exclusive intellectual rights have expired , have been forfeited, have been expressly waived, or are incapable. So if someone owned a building but had their rights for the building terminated, that building is now a public domain until someone buys the building. So, after the building has been handed over because of the terminated rights of the owner, it is now a "Public Domain".
I believe that the sections that answer the question are "We will not only defend ourselves to the uttermost..." and "With confidence in our armed forces..."
