Germany I hate word limit but the answer is Germany
Having no context and never having been to Australia, I would assume that there is a lack of opportunities for proper "brick and mortar" based schools for some areas of Australia.
Again, no context and no first hand knowledge of the continent...so, take it as you will.
Global warming
Population increase
Resources depletion
The Americans hostility towards the clergy, adherents, and the Catholic Church during the 1800s was rooted to their desires to maintain the white, Protestant nation. The reform even led to religious discrimination and violence.
The answer would be D. The nation doubled in size with Louisiana Purchase. They also took over Florida.