Answer:
The answer is D. They traded war materials with allies
Since the US didn't want to get involved with the war directly in the beginning, they traded materials and resources to aid their allies.
Explanation:
1. They won the support and loyalty of the noble families, whether through conciliatory gestures or by intimidation.
2. They levied taxes to ensure enough revenue during both war and peace and also so that they had to depend less on popular support
3. They established strong ties with the church, which kept the masses compliant
4. They constructed forts and other military structures to establish a good military presence in their monarchies
The answer is B all four planes were travelling long distances
