Good morning everyone

I have a .com site that is hosted in Australia, using local DNS, but I need to promote it mainly for the US market.

My understanding is that I would do much better with the site hosted in the US, and I will go ahead and do that..

Anyone have any more info on this? It seems to make sense as a lot of people in the uk for example use .com addresses so the search engines need to do some kind of filtering..

Does the same happen for other regions, eg if I had a site aimed at NZ should I use NZ dns?

TIA for your expert advice