This is the 18464th most frequent Russian word.
южноамериканцу
"Южноамериканцу" means "to a South American (male)."
The word 'южноамериканцу' is in the dative case, meaning 'to the South American,' indicating the person who experiences difficulty adapting.
Южноамериканцу было сложно привыкнуть к нашим традициям.
It was difficult for the South American to get used to our traditions.
Here, 'южноамериканцу' again is in the dative case, used to denote the recipient of the action.
Мы отправили подарок южноамериканцу.
We sent a gift to the South American.
In this sentence, 'южноамериканцу' is used in the dative case to signify to whom the new acquaintances are required.