History
The highlands were settled by Bantu-speaking farmers, above all the Kikuyu, who cleared the forests on the ridges between the Aberdares and Mount Kenya and farmed them in family land-holdings, trading with Maasai herders on the plains. British rule arrived with the Uganda Railway: Nairobi began in 1899 as a railway depot on a swampy watering place the Maasai called Enkare Nairobi, "cool water", and replaced Mombasa as the capital of the protectorate in the early 1900s.
The fertile land around it became the core of the "White Highlands". Settlers took farms in Kiambu, Nyeri and Nyandarua, where the Wanjohi valley gave its name to the hard-living "Happy Valley" set of the 1920s and 1930s, and many Kikuyu became squatters or labourers on land they regarded as theirs. That grievance fed the Mau Mau rising: the colonial government declared a State of Emergency in 1952, fighters held out in the Aberdare and Mount Kenya forests, and hundreds of thousands of Kikuyu were detained or moved into guarded villages. Dedan Kimathi, the best-known forest leader, was captured in the forest in 1956 and hanged in 1957.
After independence the region supplied Kenya's first president, Jomo Kenyatta, from Gatundu in Kiambu, and its political weight has remained great. Nairobi grew into East Africa's commercial capital, but it also saw the 2007–08 post-election violence spread into its informal settlements, al-Shabaab attacks in 2013 and 2019, and in June 2024 youth-led protests against a finance bill that reached the parliament buildings.
