It depends.
Some people study history to learn about the past, others study history because it's interesting, and some study it to learn from past mistakes.
The fundamental modernization of ribbed groin vaults in Gothic cathedrals was to accommodate stained glass window. The ribbed groin vault is the connection of two or three barrel vaults yields a rib vault or ribbed vault when they are bordered with an armature of piped masonry often engraved in decorative patterns and associate groin vault is an older custom of vault structure.
Answer:
B. The US had never lost a naval battle before the battle in Guam.
