Why you use the and tha?

It seems you're asking about a potential mistake in using "and" and "tha". It's likely you're referring to the incorrect use of "tha" instead of "the".

Here's why:

* "Tha" is not a correct word in standard English. It's a misspelling of "the".

* "The" is a definite article. It is used before a noun to specify a particular person, place, or thing.

Examples:

* Incorrect: "I went to tha store."

* Correct: "I went to the store."

If you're seeing "tha" used in a specific context, please provide more information so I can help you understand why it might be used incorrectly.