Southwest Asia(10,000 - 12,000 years ago, crops included barley, wheat, lentils, and olives, diffused to north Africa, southern Europe, and Central Asia), Southeast Asia(10,000 years ago, crops included mangos, taro and coconuts, diffused to southeastern Asia), South Asia(Indus Valley, 9,500 to 7,500 years ago, crops included barley, cotton, wheat and peas, diffused to Indian subcontinent and southwest Asia), East Asia(9,500 years ago, crops included rice, soybeans and walnuts, diffused to north central Asia and Korean peninsula), Sub-Saharan Africa(7,000 years ago, crops included yams, sorghum, compeas, coffee, and African rice, diffused to western and north Africa) Mesoamerica(5,500 years ago, crops included squash, peppers, maize, potatoes, and cassava, diffused to north and south america)