The Hiraab Imamate was born as a successor state to the Ajuran Sultanate, which had grown corrupt and oppressive in its final decades. The Ajuran rulers had abandoned sharia law and imposed heavy taxes on their subjects — grievances that united disparate Hiraab clans into a coherent rebellion. The first imam, Omar, consolidated power after defeating the Ajuran forces and established the Yacquubi Dynasty, which would produce a line of rulers governing from Mogadishu. The Imamate inherited the administrative structures of its predecessor: an imamic title that carried both religious and political authority, a taxation system based on livestock and cash crops, and a share of Mogadishu's port revenues. The city of Mogadishu itself, divided between the historic quarters of Hamarweyn and Shingani, served as the political and commercial capital of a state whose influence extended inland along the Shabelle River.

In 1701, seven French ships anchored near Mogadishu's harbor and stayed for eleven days, probing the city's defenses with the intention of seizing the port. The quarters of Hamarweyn and Shingani united against the threat, and the French were repelled. The incident was recorded by the Somali scholar Sharif Aydurus in his twentieth-century history, Bughyat Al-Amal Fi Tarikh Al-Sumal. Six years later, in 1707, the British warship HMS Albemarle sent an armed boat ashore, but the Hiraab detained both the boat and its crew. A later party from Captain W. Owen's vessel was imprisoned outright. These encounters demonstrated a coastal state willing and capable of defending its sovereignty against the imperial navies of the age. Nearly two centuries would pass before European powers returned in force to the Horn of Africa, this time armed with the legal framework of the Berlin Conference.

By the mid-nineteenth century, the Imamate was fracturing. When the ninth imam, Mohamed Ahmed, died in 1843, he left seven sons and no clear succession plan. One son, Ali Mohamed, seized power by killing his eldest brother, Mahmud Mohamed, in his house in the Hamarweyn quarter. The resulting civil conflict split the Imamate into competing power centers: a coastal authority headquartered in Adale, an inland power based at Mahaday along the Shabelle River, and the senior imam's family remaining in Mogadishu. This decentralization weakened the state precisely when it needed to be strongest. The 1884 Berlin Conference had partitioned the Horn of Africa among European powers, and Italy — working through its consul general in Zanzibar, the explorer Antonio Cecchi — began maneuvering for control of the Benadir coast. For up to five years, local Hiraab clans blockaded the coast from Merca to Hobyo, resisting Italian influence through economic pressure.

On April 24, 1890, an Italian steamboat arrived at the shores of Warsheikh, a town governed by a local Abgaal chief following the Imamate's decline. Lieutenant Zavagli commanded a small crew with instructions to meet the local chief, demonstrate friendly intentions, and offer gifts. What happened next was recorded by Italy's Minister Brin: the crew was attacked and killed. The Italian response was characteristically colonial — punitive and escalatory. The incident became part of the broader pattern by which Italy established its authority over what it would rename Italian Somaliland, a process that relied on a combination of naval intimidation, diplomatic lobbying against rival European powers, and the exploitation of internal Somali divisions. By 1889, Italy had secured formal possessions it designated the Afgoi, Obbia, and Migiurtinia territories, extending its reach against both Somali resistance and Ethiopian territorial ambitions.

At its height, the Hiraab Imamate possessed the machinery of a functioning state: a professional army supplied with firearms imported from Aden, Djibouti, and Zanzibar; armed guards in Mogadishu; a navy that protected its shores from piracy and secured Indian Ocean trade routes; and a mounted cavalry unit that policed the interior and collected taxes. The Imamate observed sharia law, protected trade caravans, and reportedly supplied arms to the Dervish state of Mohamed Abdullah Hassan during its resistance against the British. The alliance of closely related Hiraab groups under the Gorgaarte Hawiye lineage provided the political framework, with army leaders and advisors drawn from the broader clan structure. When the Imamate finally collapsed under the weight of internal division and Italian colonial pressure in the late nineteenth century, it left behind a three-hundred-year record of Somali self-governance — a history that predates and complicates the narrative of Somalia as a place defined solely by its modern crises.