Developed countries have historically dominated global trade through colonialism and slave trade, which provided them access to cheap raw materials from Africa, Asia, and South America to fuel their industrial revolutions. When slavery was abolished, European nations colonized developing countries to continue extracting raw materials while gaining captive markets for manufactured goods. Today, developed countries concentrate on manufacturing higher-priced goods, whereas developing countries focus on producing volatile-priced raw materials due to their climates and historical roles imposed by colonial powers. Some developing countries have recently begun limited industrialization and trade manufactured goods between each other.