Because a zipper is an easy way to hold two things together very strongly, and you can zip something up faster than buttoning it.
The zipper was invented in 1893
Zipper
in 1893
the zipper(:
1902
The zipper was invented in Chicago by Whitcomb L. Judson in 1891. 1844
Because they wanted to.
Yes, of course it was a good one.
it seemed like a good idea at the time
he invented the modern-day zipper
a good idea before you have an advert is to actually INVENT newspapers or billboards or advertising
benjamin franklin had the idea when he was thinking about it after he discoverd eletricity he made the zipper but in a different time and color