Some of her many achievements include developing a theory of radioactivity and discovering radium. Her research was critical for the development of x-rays.
<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>
Explanation:Frick began by cutting the workers’ wages, which the workers protested by starting the Homestead Strike. In late June Frick locked them out and fenced off the plant.
