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 his body lay in repose at No.1 Savile Row, then the headquarters of the Royal Geographical Society, prior to interment at Westminster Abbey. Livingstone wrote of the slave trade in the African Great Lakes region, which he visited in the mid-nineteenth century: Livingstone's letters, books, and journals did stir up public support for the abolition of slavery; however, he became dependent for assistance on the very slave-traders whom he wished to put out of business. He was a poor leader of his peers, and he ended up on his last expedition as an individualist explorer with servants and porters but