Aquamarimus

First will start with history:(Simplified)

Originally the Continent was a desert continent until humans who came way before settled thwde, bringing plants from their world and animals as well. The plant soon thrived with the knee adopted lifeforms, the seas around it had species of fish that were suitable for fishing and land mammals like cows and horses as well, they all evolved after time of course becoming more built for their new home. A mellenium passes before a terrible Earthquake that caused most of the island to submerge killing many land animals and humans alike. After many years the hand who once inhabited the world left leaving the ones who stayed disconnected, soon with evolution they became unique merpeople.

Economy:(simplified)

The economy of the Continent hasn't developed the need of any sort of currency instead they use a trading system, where the negotiations were between the buyer and seller. Although they do accepted currency from other continents it isn't really used unless for international trade.

Military:(Simplified)

The military of the Continent is made up mostly of the Merpeople who defend the continent from incoming invasions. Their weaponry may seem undeveloped, but truly one of their weapons can stand up against one made from a tinker. The part who are humans from the kingdom above the sea have developed airships and U-boats to help the Merpeople.

Mineralogy:(developing)

Although the Continent is submerged there are many ore and Crystals to be found in the seas. The erosion helped expose cores of them, but even though many people have found metals like:Iron,Copper,Silver,Aluminum, and a few human known metals there are still many unknown metals still to be found.

The gems and Crystals of the Continent are far more known since they grow below the sea and in caves along the shores. They are many Human known gems and Crystals, but there is a family of them exclusive to the Continent that can be used to create weaponry or new devices or they can create deadly gases and liquids to kill, this mainly happens when adding different ingredients to find the unique forms of the family.

Ecology:(simplified )

Even though all the animals and plants near and on Aquamarimus were brought from Earth they still developed and evolved to survive, most of the creatures still have many attributes that their ancestors before they evolved.