There was about 20,000 camps that were established by the Germans.
Answer:
The answer is A - Water, Animals and fertile lands
Explanation:
They need water to drink, animals as a source of food and fertile land to farm.
A, I checked on usa test prep
A portcullis is a heavy vertically-closing gate typically found in Medieval fortifications, consisting of a latticed grille made of wood, metal, or a combination of the two, which slides down grooves inset within each jamb of the gateway.
This shows that they were very clever to make a stone wall. This makes trying to bring down the wall harder most likely make enemy think not to attack them.