According to the article history, the Wikipedia article "Seawater" was created on June 30, 2003 at 02:36 UTC.
First you have to get the page-you want created-approved by Wikipedia Admins.
You'll have to be a person of importance. Wikipedia asks that you do not create articles about yourself. Wikipedia has policies for those who can have an article - it's called "notability".
See Wikipedia page "List of tautonyms".
Anyone that wants to but first you need to get the page created.
I do not think you can get a bio page on Wikipedia.
There is a wikipedia page called "Captives in American Indian Wars" which describes the practices.
There is a Wikipedia page on Edward Heath.
That redirect page makes sense, and has been permanently created appropriately by Bearcat during the page move
A flightless bird called the Kiwi. Check the wikipedia page for details about this animal
It's very complicated, may I suggest gong to the Wikipedia page for the Processes of Congress?
Go to the history page and look at the user id - that is who has created or edited the page. If no user id appears and it is just numbers, then the user has posted anonymously from an IP address.
Go to your search engine. Type in "Michael Hill Wikipedia" and you will see the Wikipedia page pop up in the choices of websites to pick from.