Why do some people have the same last name?

[Scott]

Sometimes, you have to know that many families uprooting, immigrant and etc. will usually pick a surname more american or something they feel goes with the native surnames. It truly depends if the person has the same roots then they could be related, but like in old, old days they usually pick last names that depicted their profession, nature, or colors. This happens all over the world, so it depends on other circumstance. Hope this helps, hope its not too confusing.