<span>The present-day medical technology that Marie Curie's work helped to develop is C. x-rays. She was a famous physicist and chemist who worked a lot on radioactivity, as well as x-rays that are used today in medicine to scan the body for harmful objects and to scan the bones for fractures. For A, a Swede named Carl-Olof Siggesson Nylen was responsible. B, Albert Sabin developed the vaccine for polio. D, John Braxton Hicks was the first one who worked in such a hospital.</span>
The answer is: A: It encouraged people to borrow money to buy stocks.
With the boom, banks began to give loans where they once had not. This risk of borrowing money from the bank was, in most people's view, a rewarding risk.
It was "the Golden Horde" who undertook the task of conquering Russia, although it should be noted that many other groups have attempted to take this land in the past as well.