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
Expansion of Jerusalem in the 19th century Expansion of Jerusalem in the 19th century The expansion of Jerusalem in the 19th century, also referred to as the departure from the walls, was the process of building new residences outside of the Old City walls, and shifting the city center to the new neighborhoods. The process started in the mid-19th century and by the early 20th century had entirely transformed the city. Prior to the 19th century, the main built up areas outside the walls were the Mosque of David (today a synagogue) and the village of Silwan. In the mid 19th century, with an area of only