The European slave trade began with Portugal's exploration of the west coast of Africa in search of a sea trade route to the East. The East had new resources, like spices and silk, and the Portuguese were hoping to acquire these goods without the hard journey by land from Europe to Asia.
I believe that the Korean War started when the North Korean Communist army crossed the 38th Parallel and invaded non-Communist South Korea.
Three quarters of Russian people live in the Northern European Plain.
I think the answer is letter c. Kepler. There are other scientists that have the same philosophy, they are Copernicus and Galileo. In that book, Newton included that the universe was like a giant clock, for all the parts will work perfectly it required mathematics.
Winston, Churchill, Franklin D. Roosevelt, and Joseph Stalin