Add Line Break (New Line) in Jupyter Notebook Markup Cell

There are two ways in which you can add a line break (new line) at the end of a sentence in Jupyter Notebook Markup Cell.

Option 1: By adding two spaces

Just add two spaces at the end of the line where you want to break it into a new line.

This is line 1.    
This is line 2.

Option 2: Make use of the HTML <br> tag

Alternatively, you can make use of the HTML <br> tag to break the line.

This is line 1.<br>.
This is line 2<br>.