well hunter-gatherers existed over 1.8 millions years ago. One way that hunter-gatherers got their food were by hunting down animals by lakes or rivers. some shelters that hunter-gatherers had were like weapon like bow and arrows of like wooden knives and their last shelters were probalay like wooden houses.
Argicultural revolution is the discovery of farming and domesticationof animals. It started during the human socieities happened in. It occured during the 10,0000 bc and the 2000 bc.
Life improved once people started collecting farming animals like cows,goats,chickens,sheeps, and more to turn their homes into a farm to collect food and drinks to give them to stores and for thoses stores to sell.