I don't know if this is necessarily the case in Chile but often it's also the countries promoting immigration bc there's shortages in labor or a lot of unoccupied land. It was often ideological or based on weird racialism too, see prerevolutionary Mexico inviting European immigrants to whiten us, or postrevolutionary Mexico bringing people from different parts of the world to mix our genes and create the cosmic race (joke's on them though because these communities turned out endogamic a lot of the time).