Ch. 868 KX Launcher
There was two people witnessing Linlin eat the children and Carmel.
One was a giant from Elbaf who was worried and came to see the kids. He returned to Elbaf and conveyed the news about Linlin's panic. This made the entire giant race hate Linlin even more furiously.
The other person was pirate wannabe cook who originally lived on the island, Streusen.
He was the user of the Kuku Kuku no Mi, which allowed him to change anything into the world into cooking materials. He helped Linlin establish the Big Mom Pirates.
End Flashback
Bege and the others face Big Mom and fire the launchers.
Another flashback
Carmel proposed to try to make this place their own country.
Carmel states that if this country exists, then the world will be able to become more peaceful.
After Carmel's disappearance, Linlin resolves to make this country that Carmel rejoiced about.