Profound social economic changes occurred
You might be looking for "parliament"
There are 8 vertices in a rectangular prism. An easy way to remember that is the number of vertices on the 2 end squares when combined, as they are shared with the side faces<span />
This is the North Atlantic Ocean.
It can be judged by its surrounding, as it is located near the North Pole, we can deduce that it is an ocean located at the north, which could either be north Atlantic or North Pacific.
We can then use the continential plate to help us determine, which is the North America plate.
Therefore this is the North Atlantic Ocean.
Hope it helps!