How has tourist affected south asia

Tourism in south Asia has boosted the individual countries' economy. One reason why one might travel to south asia is to gain spiritual enlightenment,

Ithink that the missing word is mixed

If a particular resource is not useful or needed then the price would be considerably low. once that resource is needed the price or value will raise depending on how useful or needed it is especially if the resource is low in quantity, the consumers would pay whatever they have to, to get that material.