Aphabetically, which nation is the first in the United Nations?

http://www.un.org/Overview/unmember.html

To determine which nation is the first alphabetically in the United Nations, you can visit the official website of the United Nations and go to the "Member States" section. The link you provided, http://www.un.org/Overview/unmember.html, leads to the page with the list of member states.

By looking at the list, you can locate the first nation alphabetically. As of September 2021, the first nation alphabetically in the United Nations is Afghanistan. Please note that the order may change if new member states join or if there are any revisions to the list.

It's always a good idea to refer to official and reliable sources like the United Nations website to get accurate and up-to-date information.