Colonial era: british
WW1: American
WW2: British (America for the atom bomb... but thats just one weapon. and they massed produced everything else really)
after that: AMERICA!!
Answer:
Jacques- Louis David wanted to unite classical paintings and subjects with a precison that could only be described as linear.
Explanation:
They spent the winter of 1777-78 in Valley Forge
I believe B. Let me know if i was wrong..