Why there's no portuguese language on EUW?

If in Brazil they have portuguese translation on the game why we don't have any? Can riot just add the same they have on brasil here on EUW or its not as simple has this? Im Portuguese and i can understand everything in the game but i dont get why Brasil has a translation and we don't. {{sticker:zombie-brand-mindblown}} {{sticker:sg-lux-2}}
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