How did the geographical location of ancient Rome contribute to its expansion? Choose two correct answers.

The military could cross the sea to conquer other lands.
The Apennines ran down the middle of the peninsula.
The mountains helped protect Rome.
The Tiber did not reach the Mediterranean.
The poor farmland led Rome to expand to obtain food.

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.