Answer:
It could carry more weight
Explanation:
The horse made a much better work animal than the dog because it could carry more weight than a dog. just by the fact it's so much bigger, so much stronger. It's strength was definitely the major reason why it was preferred to the dog, but the horse also adapts easily to its environment. Even if a horse eats more than a dog, because of its size, the benefits of using it for work are much bigger.
It's also much more calm and docile than most dogs, although some dog races are quite good at training and being used as assistance animal for the handicapped or blind people.
Because that's where the colonizers came from and they didn't have much when they got here.
Answer:
It changed mostly politically.
Explanation:
Socially and economically speaking the Revolution did not have a major impact, indeed those who were part of the ruling classes remained in the upper classes. Slavery was not abolished after the Revolution, though in the North it was abolished shortly after the revolution.
Politically speaking it led to the creation of the Republic with its principles of liberty. The republic was inspired by the ideals of John Locke. The colonists were no longer the subjects of the British crown.