Why Do We Say “A Pair of Pants”?

Well, there are more than a pair of answers.

If you call trousers pants, what do you call underwear? - Quora

Why are scissors called a 'pair of scissors'? - Quora

How to Tell if Pants are Mens or Womens

Why do we say a pair of underpants? - Quora

Why is it a 'pair of pants?' Does that mean each leg is a 'pant,' and if so, have singular 'pants' ever been sold and worn separately? - Quora

Is Pants a Plural Noun?

Why are scissors called a 'pair of scissors'? - Quora

Why Do We Have A Pair Of Trousers? - LBC

Wearing the same pair of pants for a year straight connected me to my past - CNET

Why We Call Denim Pants 'Jeans' - Jeans Name Origin

Wearing the same pair of pants for a year straight connected me to my past - CNET

Why do we always say 'pants' instead of 'pant'? What's the real history behind the word that being plural? - Quora

3 Ways to Hem a Pair of Pants - wikiHow