10. Assess an Argument Consider the following argument in favor of continued economic aid to other nations and then assess whether the argument is valid:
Foreign economic aid to other countries is a good investment for the United
States. It comprises only one percent of the entire federal budget, some $20 billion
dollars, and yet returns untold amounts in increased sales of American goods
and services.

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.