The country that I want to go in Asia is India. Because India is the place that you can see lots of things = so it will be fun, and my family wants to go too, so we can go together.

Correct:

The country that I want to go in Asia is India. Because India is the place where you can see lots of things, so it will be fun  and my family wants to go too, so we can go together.

Explanation:

1. We use 'where' as a conjunction meaning 'in the place that' or 'in situations that'. The clause with where is a subordinate clause and needs a main clause to complete its meaning.

2. Please be mindful of using proper punctuation marks.

Comment:

Thank you for submitting your homework. I am glad to know about the country that you want to explore. Keep up the good job!