Where did the measuring systems (metric & imperial) originate and how?
I had a thought that crossed my mind a while back that went something like this:
It's a cool thing measurements exist, if there wasn't, there'd be trouble and we'd be counting atoms if we could.
Funny, nonetheless, but now that I think about it, there's some curiosity of mine wondering how we got these measurements in the first place. "How'd we get miles?", "What're gallons?", "Why is it called pounds?", just to name a few. Though, there's only 1 question that can narrow down many of these.
Where did these measurements come from? The answer to that is the measuring system, actually, 2 measuring systems: metric (meters, liters, grams, etc.) and imperial (miles, fluid ounces, pounds, etc.)
Now this brings another question, which is the one that I'll ask here. There are many measurements that it's clever to know how these measurements came in the first place.
Where did these 2 measuring systems come from, and when or how did they come to our lives?
BONUS: Name a few creators of these measurements and whatever they created.