Byzantium is where also in the christian art, where Constantinople where place. And it has Vessel that is bronze and also has a part of lamp either a burner. They have an art that is tapestry fragment that was made in woven cloth.

The Iconic art is started by a realistic idealism, which they combine human and also their attitudes and proportion.
The Japanese art had created ancient pottery, sculpture, bronze, ink painting and also they are now creating cartoon which what they are famous now. Pine Wood by Hasegawa Tohaku is an example of art that they made in ink on paper which they represent a bamboo that said to be that it is not important if it has mountains, they only show or paint bamboos can still stand whatever climate would pass through it. It can stand by itself. I hope you understand the meaning that pointing out.
In African art, they are very traditional. They represent the people, the societies, the civilizations and with ther each special cultures.
In Iceanic art they are native people who live in pacific islands and also what I observe they are rich in stone, wood carvings and painting and also they carv symbols and their era's all about.
Each and every art has a unique skills and creativity. Im so sorry that I didn't understand much about their period but im pushing myself to understand it.