Doxey's Irritation Index, or “Irridex”, suggests that as the number of visitors increases at a given destination, reside

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Doxey's Irritation Index, or “Irridex”, suggests that as the
number of visitors increases at a given destination, residents pass
through a sequence of emotions and reactions. He identified four
main stages in the relationship between the host community and
guest, beginning with “euphoria” and culminating in
“antagonism”.
Explain how sustainable tourism planning can result in better
relations between tourists and host communities. (10%)