Actually its are a peoples' correct.
"Spotted these people dancing zumba" is not correct grammar but the correct grammar is "I saw these people dancing Zumba"
Why are people.
"Who has" is correct when referring to a single person. "Who have" is correct when referring to multiple people.
you get to help people you have to correct papers you get to help people you have to correct papers
The single possessive of people is people's. The plural possessive of people is peoples'.
That's not even a complete sentence. The words TO, SAT, THIS, PEOPLE and IS can not be combined in any way to make a grammatically correct sentence. ------------------------------------------------------------------------------------------------------------- Assuming the question should be Is it gramatically correct to say, "This people is..."? then it is not correct. One should say, "These people are...".
The "live there" is more technically correct. However, either may be correct. "People who live there" has a context of ordinarily or typically. "(The) People who are living there (now) is a current context.
People's
No, it is not correct, it should be hundreds of thousands of people.
There is no "correct" religion.
"Have people" is the correct form. For example, "Do you have people helping you?"
Yes. "I do not like people" is complete and correct, albeit anti-social.