Which revision improves the flow of the paragraph? “Lords who owned land in Japan certainly had armies. These professional soldiers fought when they were called on. However, lords also had farmers whom they could call on for help when needed.”
“However, lords who owned land in Japan certainly had armies. These professional soldiers fought when they were called on. Lords also had farmers whom they could call on for help when needed.”
“Lords who owned land in Japan certainly had armies. However, these professional soldiers fought when they were called on. Lords also had farmers whom they could call on for help when needed.”
“Lords who owned land in Japan certainly had armies. These professional soldiers, however, fought when they were called on. Lords also had farmers whom they could call on for help when needed.”

"germany's geographic location was an advantage when it was on the offensive in the war because it was situated next to an extremely wide river, the rhine, which was difficult for the allies to cross."

dylan has written many enduring songs and he has received several awards for his musical achievement;  

any written work with artistic value can be considered literature; especially if such work is publicly recognized, and has had importance and endurance among people; whether is poetry or fiction or drama or even criticism, since it's the transcendence and representation of a culture, language or people in a period of time to more people, using letters (words), regardless the subject.

the nobel prize in literature is given to authors from any country based on a body of work as a whole that inspires and nurses the life of humanity.  

and the work of bob dylan matches that description, therefore is well deserved since he'd created new poetic expressions within the american song tradition, that has inspired and influenced the lives of many people, not only withing the united stated but worldwide as well.

the mass production of steel reduced its price and led to its use in many industries.