Problems when wordpress moved to another directory

I set up a wordpress install at https://nationalanthems.info/wordpress so that I can create the WordPress site while having my main site at https://www.nationalanthems.info still up and running during the time it took to create the WordPress site. After a year of working on the WordPress site, I finally got it ready this week, but when I copied all the files from the /wordpress directory to the root directory to replace my current page with the WordPress site that I spent the last year working on, only the index page shows up without “wordpress” in the URL,the rest of the pages linked from the navigation bar link to the /wordpress files, if I type the URL without /wordpress in it, it gives a “file not found”.

I’m preobably forgetting to change something from /wordpress to the root directory that I set long ago when I first set up wordpress in the temporary /wordpress directory, but I don’t know what I could be missing. Help?