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.
True the US joined in 1945 after the bombing of pearl harbour
Eugene Delacroix painted Liberty Leading the People
Explanation:
hmm i don't know use the internet it maybe most of the answers are on there
