Like the egyptians the kings of what were burieed with their personal belongings including valuable gems gold jewlery and pottery

Viking kings would bury their riches and belongings along with a soul to protect it. They also would be buried in their boats, the boat always filled with their belongings. As well as Chinese emperors. Having grave goods was a custom in china from the neolithic period (About 5,000 BC) to the Ming Dynasty (1644). And according to the Boxer Codex, the indigenous people of the Philippines practiced ship burials. 

Its a whole new world