Read the story. Marie and Plerre Curie were both winners of the Nobel Prize in physics. This prize is one of the highest any scientist can receive. Their
daughter, Irene, also received a Nobel Prize in chemistry. The Curies were a remarkable family. Pierre Curie was already a famous scientist when he
met Marle, who had fled from Poland. Together they discovered polonium and radium, two elements that are important in modern Industry, Pierre
Curie was killed in an accident, but Marle carried on scientific research until she died in 1934

In 911, a group of vikings lead by rollo besieged paris and chartres. after a victory near chartres on 26 august, charles decided to negotiate with rollo. the talks were led by hervé, the archbishop of reims. this resulted in the treaty of saint-clair-sur-epte, which granted rollo and his soldiers all the land between the river epte and the sea. it also granted him brittany, "for his livelihood". at the time, brittany was an independent land which france had not been able to conquer. in exchange, rollo promised the king his loyalty and military assistance when needed. also rollo also agreed to be baptised and to marry gisela, the king's daughter. the territory given rollo is about the same as upper normandy. this would grow to become normandy under rollo's descendants. - wikepedia