D. the United States and the Soviet Union
Assuming you're referring to the "French and Indian War", the outcome was significant since it led to the British heavily taxing the colonists in order to pay for the war (which they won), which led to the American Revolution.
Answer:
Putting aside the very real human cost, war has also serious economic costs – loss of buildings, infrastructure, a decline in the working population, uncertainty, rise in debt and disruption to normal economic activity.
thats the year the war started