USAID programmes focusing on nutrition operate within the Morogoro, Dodoma, Iringa, Mbeya, Manyara, Songwe and Zanzibar regions of Tanzania. These "Feed the Future" programmes heavily invest in nutrition, infrastructure, policy, capacity of institutions and agriculture which is identified by the organisation as a key area of economic growth in the country. A Tanzanian government led initiative "Kilimo Kwanza" or "Agriculture First" aims to encourage investment into agriculture within the private sector and hopes to improve agricultural processes and development within the country by seeking the knowledge of young people and the innovation that they can potentially provide. During the 1990s, around 25% of Tanzania's population were provided access to iodized oil aimed to target iodine deficiency within expecting mothers, as result of studies showing the negative effects of in-utero iodine deficiency on cognitive development in children. Research showed that children of mothers with access to the supplement achieved on average greater than a third of a year more education than those who did not.