Answer:
As with Greek sculpture, the Romans worked stone, precious metals, glass and terracotta but favoured bronze and marble above all else for their finest work. However, as metal has always been in high demand for re-use, most of the surviving examples of Roman sculpture are in marble.
Explanation:
Most civilizations have practiced some form of slavery in their development. Famine or fear of stronger enemies might force one tribe to ask another to help and give themselves in a type of bondage in exchange that was similar to the European serf system.
Arabs also had slave trading, they exchanged slaves for goods from other parts of the world.
Until that moment, slavery was not linked to color, it was mostly linked to war and economic opportunities.
Slavery became a matter of color when Portugal started to explore the West Coast of Africa in 1444. Because African slaves were identified by their skin color since then, slavery became a matter of color and not economic opportunities or war. Europeans settled in Brazil, Caribbean, and North America and developed a system of racially based slavery.
The Northern region of America grew through becoming a region that engaged in manufacturing and selling the manufactured products. By 1860, the north produced 17 times more cotton and woolen textiles than the south, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3, 200 firearms to every 100 produced in the south. Northern agriculture also became more mechanized and so northern farmers began producing more agricultural products than the south who depended on slaves to do the work on the farm lands.
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