Tolkien World Building

Tolkien is known for world building. How does he bring the reader into his imagined worlds? What tools does he use as a writer?
Tolkien is well known for his incredible world-building in his stories, The Lord of the rings is not an exception to this. In The Fellowship of the Ring, he uses multiple different methods to really encapsulate the reader in the immense world. Tolkien, first of all, has a fully made up map similar to how you'd see it if you were in the world, then the way the world is referred in the story helps show the true size, lastly how time is relevant and talked about the importance in the story.
The map that is included in the book establishes the very small scale that the shire is especially in comparison to the rest of the world. From the point of view in the book makes the shire feel very large, looking at the map the shire isn't very large. The long road that Frodo was guided to follow seems to cross the massive world as explained in the book both with Frodo's poem and his thoughts about the trek afterward.

Now far ahead from the road has gone, And if I must follow, if I can, Pursuing it with weary feet, Until it joins some larger way, Where many paths and errands meet. And whither then? I cannot say,” this poem directly points out the size and how the road branches off and connects each point of the road. The way the characters talk about the world pushes the grand size of the world. When Gandalf was taking to Frodo, he had said just travel east along the road and you will arrive. Again when Rivendell has mentioned the details about it were no more than that Sam wanted to see elves and there were elves there. The lack of detail makes the world more unknown and gives off the vibe of what's