How did the arrival of Friedrich von Steuben affect the Continental Army? A.
It demotivated the Army men.
B.
It proved to be a source of the secrets of the French government.
C.
It led to the American Civil War.
D.
It led to an improvement in military tactics and regulations.

I think it is C

Explanation:

because it is what i think

what terms are there?

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.