Please help!! this is the last question on my homework but i don't know the answer

What was the underlying cause of the cold war?

Which industries produced great profits and wealth in the late 1800s

1. what was william harvey's discovery about the human body? @ two types of blood flowed through the veins and arteries. b four fluids existed in the body: blood, yellow bile, black bile, and phlegm. © the same blood flowed through the veins and arteries. d ancient ideas of human anatomy and bodily functions were wrong. done