Radium was discovered by Maria Sklodowska-Curie -the correct answer is b. Actually she discovered it together with her Husband, Pierre Curie, they obtained it from a uranite sample.
The New Deal under President Roosevelt greatly helped alleviate many of the nation's economic problems through government work programs and incentives.
Chinese Terracotta Army has been found in the Mausoleum of the First Qin Emperor, namely Qin Shi Huang. The Terracotta Army (Warriors) were discovered in March 1974 when Yang Zhifa, his five brothers, and Wang Puzhi were digging a well in Xiyang, a village in Lintong County.
Answer:
B
Explanation:
It is the only answer with Americans in it and the entire idea of Manifest Destiny was the idea that the US should control the continent from coast to coast.