Core countries (the United States, Canada, Japan, and Australia) are the ones exploiting semi-peripheral and peripheral countries. They have strong working classes, have high HDI, highly urbanized. Semi-Peripheral countries (India and China) are currently developing, industrializing, rural to urban growth, increasing HDI, Secondary/Tertiary jobs are dominant. Peripheral countries (All of Africa except South Africa, Russia) have a Primary sector economy (exporting oil and other raw materials), largely rural population, export raw materials, exploited by the core, high social inequality (favor towards men). Goods and resources flow between core and peripheral countries. Peripheral countries are paying high prices, slowing down development. Peripheral countries depended on the core to buy goods from them.