I believe the answer is D
There was about 20,000 camps that were established by the Germans.
The pioneers were the first Americans committed to personal freedom.During the colonial times, the English and criminal common law made criticizing the government a crime and personal freedom became important.
Europeans were originally motivated to explore the seas to discover previously unknown lands, especially after the contact with America, where europeans found all kind of valuable goods. The portuguese were the first to pursue maritime exploration, soon to be followed by the spaniards.