The Great Shattering of the ancient continent of Astagan resulted in the loss of more than 50% of the total landmass in the world. The remaining land fractured into even smaller pieces as the continental crust disintegrated and fault lines gave way to violent rivers. Rapid glacial loss worldwide drove a rise in sea level that decimated coastlines and flooded former river valleys. Notably, ancient trade routes that were formerly the Myca, Fjoria, Strudd, Drudon, and Morstett rivers are now the great seas of Rivania. The Shattering left Astagan with three sub-continents: Astagan (present-day Astagan and Aleppi), Sendua, and Khol (present-day Kroshone). Each of the three sub-continents would face further destruction as the new world takes shape.