What is this a picture of, where was it located, what was it used for?

What role did the alliance system play in preventing austria-hungary and serbia from coming to a compromise settlement?

When conducting research for forming a hypothesis, which practice should historians follow?

How does the supremacy clause of the u.s. constitution affect the states? o a. it requires each state to establish a supreme court. b. it declares that the federal government can take away state powers if necessary. o c. it allows state governments to overthrow the federal government if necessary. o d. it ensures that the u.s. constitution overrules each state constitution