Why is the \n required?

Answer 1

Newlines can increase readability in long texts.

Answer 2

it is not required it just means, type what comes after the \n on a new line

Answer 3

Files are one dimensional, just
A single line of characters, one after the other.
The only reason
Your phone
Can display these words
On different lines
Like this
Is that, there are newline (\n) characters, which the program that draws the text understands, and treats specially.