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Now it is perfectly grammatical even if not perfectly literary.

For further improvement I would replace:
- Но это хорошо. -> Но это же хорошо!
- согласно легенде в Южной Америке -> согласно...

Yes, but I gave Moscow as an example of rule, because foreign names can make some theoretical complications.

"давать свиней - Instrumental required"
Why instrumental? Looking at this now, I...

wrong (adv) = "не так", "неправильно" (you just missed)
Verb "есть" in Present Tense in Russian usually skipped. У нее три ноги.
Try to avoid usage of verb "иметь". "люди, которые их имеют" = "их...