What Was Significant About the Son of a Minor Vassal,Oda

Multiple Choice

What was significant about the son of a minor vassal,Oda Nobunaga?

A) He established a system of currency to enable easier trade with the West.
B) He established a school for the creative arts, perpetuating the Ashikaga style.
C) He improved trade by using gun powder as a commodity.
D) He forged alliances to unify the country under a single administration.