Answer:
They built them on hills.
Explanation:
Of course, they did this to create a natural defense from the attack of foreign invaders. For example, the city of Rome itself was built on seven famous hills. Of course, through time they tried to fortify them as much as possible, but the main defense laid on the physical location of those cities.
An archenemy is someone who is hostile towards someone or something else. In this case, the US and Soviet Union were archenemies because they were both very powerful and both of them wanted to be better than the other.
Hope this helps :)
1. A. The Hague Netherlands
5. A. Communism
