<span>Copernicus placed the sun at the center of the universe. Ptolemy place the earth at the center.
Both of these view couldn't be proven at that time, but only Copernicus experienced negative backlash by the church because it's deviate from the biblical teaching. Not until year of 1600s before another intellects name Galileo created the invetions that might prove Copernicus' theory (which also being torn apart by Religious groups)</span>
Answer:
The Great War also saw the introduction of the planned economy and a much bigger role for the state. Soon after the outbreak of war the German government took control over banks, foreign trade and the production and sale of food as well as armaments. It also set maximum prices for various goods.
The teacher gives a link so you can watch the video again. I know of Jared Diamond from his books. I have not seen this video before & would need to watch it too in order to help you.