What is the contour interval of this map ?

Even though both ww1 and ww2 were in many ways the same conflict with basically the same countries facing off against each other, the way each war started was significantly different. the question is how what were the differences on how they started

What bodies of water provided the eastern border of the zhou dynasty? ?

What are two effects of the lack of representation of the third estate in the estates-general? two answers