Answer:
Explanation:
Natural fortifications also helps defend a country. For example the Alps in Italy defends them very well. Rivers can also be a defensive position a country can fall back to. So no, fortifications and defenses arent the only thing. Nature is able to help too.
Answer: Well the hundred year war started to decline once the nations england and france separated.
If this is according to the United States, the answer is B. The south (Georgia, Carolinas etc) had plantations and slavery.
He kept quiet about the missiles. He did not want anyone knowing he had discovered them.