Answer: What book is it?
Explanation: It’s hard to answer when it’s asking about reading material we don’t have and some of your answer should be based off a discussion you had in class.
Is any of your reading material digital?
Answer: Concert of Europe, in the post-Napoleonic era, the vague consensus among the European monarchies favouring preservation of the territorial and political status quo. The term assumed the responsibility and right of the great powers to intervene and impose their collective will on states threatened by internal rebellion.
Explanation:
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.