early 2000s, a number of interim federal administrations were created. The Transitional National Government (TNG) was established in 2000, followed by the formation of the Transitional Federal Government (TFG) in 2004, which reestablished the Somali Armed Forces. In 2006, with a US backed Ethiopian intervention, the TFG assumed control of most of the nation's southern conflict zones from the newly formed Islamic Courts Union (ICU). The ICU subsequently splintered into more radical groups, including jihadists al-Shabaab, which battled the TFG and its AMISOM allies for control of the region. By mid-2012, the insurgents had lost most of the territory they had seized, and a search for more permanent democratic institutions began. Despite this, insurgents still control much of central and southern Somalia, and wield influence in government-controlled areas, with the town of Jilib acting as the insurgents' de facto capital. A new provisional constitution was passed in August 2012, reforming Somalia as a federation. The same month, the Federal Government of Somalia was formed and a period of reconstruction began in Mogadishu, despite al-Shabaab frequently carrying out attacks there. Somalia’s GDP per capita is one of the world's lowest, and it belongs to the least developed country group. In 2019, Somalia had the lowest HDI in the world, and in the same year, 69% of Somalia’s population was living below the poverty line. As of 2020, Somalia is placed the second highest in the Fragile States Index. It has maintained an informal economy mainly based on livestock, remittances from Somalis working abroad, and telecommunications. It is a member of the United Nations, the Arab League, African Union, Non-Aligned Movement, and the Organisation of Islamic Cooperation. History Prehistory Somalia was likely one of the first lands to be settled by early humans due to its location. Hunter-gatherers who would later migrate out of Africa likely settled here before their migrations. During the Stone Age, the Doian and Hargeisan cultures flourished here. The oldest evidence of burial customs in the Horn of Africa comes from cemeteries in Somalia dating back to the 4th millennium BCE. The stone implements from the Jalelo site in the north were also characterized in 1909 as important artifacts demonstrating the archaeological universality during the Paleolithic between the East and the West. According to linguists, the first Afroasiatic-speaking populations arrived in the region during the ensuing Neolithic period from the family's proposed urheimat ("original homeland") in the Nile