What rhetorical device is in the following lines: "Together, we determined that a modern economy requires railroads and highways to speed travel and commerce, schools and colleges to train our workers. Together, we discovered that a free market only thrives when there are rules to ensure competition and fair play. Together, we resolved that a great nation must care for the vulnerable, and protect its people from life’s worst hazards and misfortune" Oxymoron
Anaphora
Epistrophe
Understatement