A location is an important factor while choosing the hosting service for your site/application. You will have better performance/loading time for your site if it is hosted in the same country from where it is being accessed. If you have most of the visitors in USA, the USA based server will suit you the most. This is also applicable to the application hosting such as forex trading. If your provider is in Singapore and you select the server based in Singapore, you will have better performance with low latency.