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
David Livingstone the British. Partly as a result, within 50 years of his death, colonial rule was established in Africa, and white settlement was encouraged to extend further into the interior. However, what Livingstone envisaged for "colonies" was not what we now know as colonial rule, but rather settlements of dedicated Christian Europeans who would live among the people to help them work out ways of living that did not involve slavery. Livingstone was part of an evangelical and nonconformist movement in Britain which during the 19th century helped change the national mindset from the notion of a divine right to rule