Korira comes from Arab person named ‘Lilah’, later in Chagga dialects ‘L’ sound is replaced by ‘R’; and ‘Ko’ means ‘the place of’. Lilah built a fortified boma near the residence quarters of Mangi Mandara bin Kiusa of Mbokomu the current Old Moshi.
Lilah tempted Mangi Mandara with manufactured goods, most notably muzzle –loaded flintlock guns that were in great demand for elephant hunting and intertribal wars; and Lilah got favor of obtaining slaves and ivory in easily way.
The endemic brutality of slave trading was beyond question, but it was so profitable that it had proved hard to eradicate. Lilah stepped up the trade being helped by Swahili (Segeju warriors). They built slave collection centers along the route to the coast of Tanga region in Northern Tanzania and Mombasa in Kenya.
From Korira in Moshi to Kifaru, Kambi ya Simba into Ugweno through Mkomazi National Park; and Kisiwani, Ndungu and Kihurio; Bendera, Mnazi, Mtae into Maramba in Mkinga district.
There is an option route to Pangani that is from Bendera to Korogwe into Amani in East Usambara Highlands, Muheza to slave ports of Pangani district. The route became famous also to German and English explorers and colonists of the 18th century.
It has become clear that the enslavement of native Tanzanians did not stop with the demise of the Indian Ocean slave trade. That is on this very day and hour as you read this, the natives in particularly girls along the coastal area are bought and sold in the Middle East countries.
In Tanzania, East Africa's largest country, the Chagga and Maasai warriors merged, as a result of intertribal warfare, Pare women and children were captured in raids on their villages and sold to Hassan Lilah’s men and Swahili people from the coast.
The enslavement of black indigenous has existed in Tanzania for many centuries. It is a country that joined the descendants of Arabs and Shirazis from the Middle East countries, known as Wasuli and the black ethnic communities that had lived along the Indian Ocean coastline of Tanzania mainland and Kenya.
Black indigenous, mostly sedentary farmers, consisting of the Pare, the Digo, the Shambara, the Zigua and the Nguu; and the Bondei tribes were enslaved after being captured by raiding Segeju (Swahili) and allied Maasai/Chagga warriors.
This activity predates and postdates the Western Atlantic slave trade. Simply put, the slave trade that inflicted black indigenous to these shores never stopped on the coastline of the mainland.
Several millions of descendants of indigenous people conquered by Arabs during the 9th century are still living as old-fashioned slavery institutions on the entire coastline of the mainland; witnessing writers of this report after conducting a yearlong investigation.
Differing only slightly with this estimate, the writers estimate that over four million indigenous on the Indian Ocean coastline of Tanzania mainland still live as the property of the descendants of slave traders, and that's a conservative estimate.