I know that They were following the rules of Mercantilism to keep foreign goods out. There's most likely more to this, though. I just looked this up and they (the british) needed to pay war debt, which is another reason Colonists were unhappy. They thought the colonists owned them beacause of the French and Indian war success
No because, if were all the same, were human and it wouldn't be fair to add extra on because a person needs a little extra space, espically cause there weight.