What is the principle in which the three branches of government work together and each branch must approve certain actions of other branches?

What lands were added to the russian empire under ivan iv, peter the great, and catherine the great?

The maps below show the middle east. which best explains how the green areas depicted in the image on the left are reflected in the population map on the right? populations are greater in fertile areas that are close to freshwater sources, which is why more people live near deserts. populations are greater in fertile areas that are close to freshwater sources, which is why more people live near oceans. populations are greater in fertile areas that are close to freshwater sources, which is why more people live near mountains. populations are greater in fertile areas that are close to freshwater sources, which is why more people live near rivers.

How did the treaty of versailles cripple germany after world war one ?