Answer:
The architecture of Ancient Rome is probably one of the most testimonies. Today Roman architecture is dated to the date when the ... Around this time, and during the conquests of Rome in Sicily and in the same ... Roman buildings, depending on their use, could be very sober or very sumptuous.
Federal is a system of government. This means both the central government and the local government share power. Not sure if the sentences were questions, but I will answer them by numerical order.
1. Unitary
2. Federal
3. Confederation
4. Oligarchy (This is a type of government!)
Hope this helped!
Russia, caucasus, and eastern Europe are close to each other. I would think it is Scandinavia, but I'm not sure. I do wish there was a map.