I was looking at this to be added to the random brainoff category. I don't like the wording of the question as applying to art movements e.g. Art Deco happened during 1920 - 1930, I bet somebody can name a major piece of Art Deco made in 1919 or 1931.
I wondered if it may be better to separate Periods and Movements?
Looking through, these are Periods I can see:
Dutch Golden Age
Medieval (I like to spell it mediaeval, its another US/UK, old fart/whippersnapper split)
Rococo (another spelling I didn't know, Roccoco is what I know., Don't worry, the older generation will die out soon)
That's only 8 facts, but my Proto-geometric and Geometric bring it to 10.
Periods by itself is an easier subject, and I suspect there are more to be added.
Meanwhile I wondered if they do get separated, could the question for Movements be something like:
During which years did X flourish?
X flourished during which years?
I hope other people have opinions on this. Some of them I'm going to nudge.