Use a Content Delivery network

A customer’s location can have an impact on response times.  A content delivery network (CDN) is a collection of web servers distributed across multiple locations to deliver content more efficiently to users.  When a customer’s browser requests a file, their browser will download it from the closest available server, which will be much faster than if it was downloaded only from the country where your website is hosted.  It also saves bandwidth on your website, since the file is downloaded from the CDN instead of your website.  Customers will also save bandwidth if the file is a common library like jQuery that has already been downloaded for another website, since the file will be read from the browser’s cache instead of re-downloaded.

Google has a CDN available with many common libraries.  For example, the URL for jQuery v1.4.4 is https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js.