Long ago, I wrote my post Blogging - The Directory and URL Structure.
See the differences, between the title, and the URL? This difference bothers some blog owners, who want the Title and URL to match, word for word.
Just recently, I published a pair of brief static pages - A Test Of A Test, and The Test Of The Test. Note the URLs, please. Now, examine the pages.
Both the words "A" and "The", in page and post titles, are dropped from URLs - as interior words. Neither the leading "a " or "the " gets removed, however.
"a "and "the " remain, in any page or post URL. " a " and " the " are dropped, when rendering a title as a URL.
This is yet one more detail, that makes it a challenge to map Blogger URLs to various other website publishing platforms - when planning a blog migration, for instance.