What does the camera obscura show about Muslim contributions to scholarship? Muslim scholars improved on past ideas and developed new ones.
Muslim scholars focused mainly on translating the works of Greeks into Arabic.
Inventions by Muslim scholars were intended to improve their practice of Islam.
Inventions by Muslim scholars were focused on mathematical applications.

Anthropology, archaeology, classics, history, language, law, politics, literature, performing arts, philosophy, religion, and visual arts.

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