My guess would be D. Agriculture.
It really depends on which war the question is referring to, but if it's referring to WWII the answer would be true.
Answer:Nicholas Steno first formulated the principles that allow scientists to determine the relative ages of rocks in the 17th century. Steno stated that sedimentary rocks are formed in continuous, horizontal layers, with younger layers on top of older layers.
Explanation:
South Africa, it's a city in India