I make no claims to being the youngest, first, whatever. But I was skinning my brother's muskrats at 13 when he got his shoulder dislocated and couldn't do them (he was 11 and had his first "trap line") . We lived in the rural suburbs.... I was babysitting for money at 12, I had experience from 2 younger brothers and a little sister... no fancy baby sitting course.. but there was always an adult a phone call away if there was a real disaster... started working on an egg farm (small only 5,000 layers) at 13, legal for farm work.... had been riding for several years by myself on whatever horse I could beg rides on and earned enough money to buy my own at 15...
Had my son learn to drive the truck at 10 when I moved to Va and was cutting hay with an old single bar sulky type mower... adapted to being pulled by the truck from horse drawn, used a dump rake to first gather the hay into "semi-windrows" and we forked the hay into the truck when dry and then forked it into the hay mow in the homemade leanto barn....
Wish life were that simple and satisfying even if it was alot of hard work... milked my 4 cows by hand and made butter and all that in my 30's after I moved to Va....