Is it fastest to store static files such as images close to the user?

I am currently using aws for my web application. It goes back to EC2, and region is the United States. Most users are in Korea. At this time, I would like to save a static file such as an image in S3 and use. Then, is it right to use Seoul region for S3?

When you render html on the EC2 server, I wonder if you actually bring in a static file and render it, or if you render it only with an address.