Left or Right
LEFT: Zipper 1064 66.33%
By World War II, the zipper had become widely used in Europe and North America, and after the war quickly spread through the rest of the world.
RIGHT: Buttons540 33.67%
Functional buttons with buttonholes for fastening or closing clothing appeared first in Germany in the 13th century. They soon became widespread with the rise of snug-fitting garment in 13th- and 14th-century Europe.
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