Each island has a different cargo item that is very cheap, and one that is very expensive. If you go in a clockwise direction around the islands, you will be able to buy items cheap and sell them for almost twice as much. Hope this helps :)
Start from any island. Buy things at the lowest price like when they are 14 doubloons. Sell things at the highest price like when they are 32 doubloons.
they're in random places on the island
you go to the end of the island and you will see it
it depends what island you are talking about but if it is early poptropica then it automatically equips when you go in dark places if not sorry idk
Most likely it is Early Poptropica. The places are plainly laid out and anyone could figure out what the next step is. Early Poptropica is in the upper left hand corner.
Nabooti Island is set in Africa. Except for the fictional town of Nabooti, all of the locations are real places in Africa.
The order of the jewels from the top is purple, green, red, white, and blue.
The treasure hunt was a term for seeking Bonus Items on Poptropica. These included items from coming islands, notably the sunglasses from Spy Island and a Kaya Forest mask from Nabooti Island. They were located in various places throughout Poptropica and are no longer available. (see the related question
Some islands have their own names for Main Street, but town square probably refers to the Village on Early Poptropica or the places you first encounter on Astro Knights Island.
easy. get a ship. go to five places you get to sail to. each place has a peace.
wait for the next island to come out but until then go to the interactive places on the islands.
they are all over the island, you have to look everywhere. (on buildings and in buildings, places you wouldn't expect to find it.