why we are giving strong tag?

Answer 1

Strong tag is used to make the text bold.

Answer 2

As in the HTML tutorial, there are two ways to make the text bold:
1. Using the '<b>' tag
2. Using the '<strong>' tag

There is no difference between them except the tag name so if you are not using classes or IDs in CSS, you will have some advantage.

Answer 3

to make text appear in bold.