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:pretty sure it's d
Explanation:a is unreasonable because they're too old, b isn't it because they're too old, and c i don't think it's EXACTLY like the one described. good luck!
Answer:
The maritime effect is the moderating influence that the ocean has on the climate of a region. In the case of the easternmost states in the USA, the proximity to the ocean and the more moderate maritime air masses usually prevents the most frigid Arctic cold from parking over the region for too long.
Explanation: