Are you stuck on Stage 4/4 of the Conquering the Island quest in the Edge of the World location? 
Here’s how to find the Expedition supplies to complete it!
Go to your Friends tab in the game.
Visit your friend’s settlement that is located in The Edge of the World.
Once you’re there, tap on the Gifts section.
You’ll find a special gift called Expedition supplies – this is what you need!
Leave the gift in your friend’s location to complete the quest task.