19th-century philosophy of complexity from mathematics, astronomy, physics, chemistry, biology, and a new discipline called "sociology", which is the study of the "dynamics and statics of society". The American philosophers Charles Sanders Peirce and William James developed the pragmatist philosophy in the late 19th century. The twilight years of the 19th century in Britain saw the rise of British idealism, a revival of interest in the works of Kant and Hegel. Transcendentalism was rooted in Immanuel Kant's transcendence and German idealism, led by Ralph Waldo Emerson and Henry David Thoreau. The main belief was in an ideal spiritual state that 'transcends' the
British diaspora in Africa proclaimed a British colony in 1843. Following the defeat of the Boers in the Second Boer War in 1902, Britain annexed the Boer Republics of the Transvaal Republic and the Orange Free State. Scottish medical missionary David Livingstone famously explored Africa, and it is believed he was the first European to set eyes on Victoria Falls in 1855. He is a key character in African history, being one of the first well-known Britons to believe his heart was in Africa. In the late nineteenth century, the discovery of gold in the Witwatersrand and diamonds in Kimberley encouraged further settlement by