We assume it increased easier access to protein, allowing less time taken up hunting for this.  Therefore more time was created to improve and discover new agricultural methods.  A help?  Depends on your view of history!
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Domesticating animals such as sheeps, goats, cows and pigs had brought to continuous source of food for the Neolithic people. They breed the animals till the population increased and eventually became too many to be taken care of. However, they soon came up with the idea of barter system where they could exhange their excessive belongings with the items they need. For instance, when they have too many cows but run out of vegetables, they can exhange their cows with vegetables from other people, therefore everybody can get rid of unnecessary excessive things and obtain the needed things they are short of.