What is "div" in HTML

Question

There is a lot of HTML codes using <div> but there is no lesson about it so I want to ask about
-What is <div>
-Attribute of <div>
-Using of <div>

Answer 1

<div> tag has no formatting effect on its own
it carries attribute of any tag given with in <div> tag

Answer 2

it means that if u just use <div> with out any attribute there will be no effect but if u want to make the text center u can use <div align="center"> b/c align is not a tag but just attribute

Answer 3

yes u can use most of attribute using it

Answer 4

what does no formatting effect mean ?
and you can get any attribute in the <div> tag ?