In Europe, a movement to reintroduce cremation as a viable method for body disposal began in the 1870s. This was made possible by the invention of new furnace technology and contact with eastern cultures that practiced it. At the time, many proponents believed in the miasma theory, and that cremation would reduce the "bad air" that caused diseases. These movements were associated with secularism and gained a following in cultural and intellectual circles. In Italy, the movement was associated with anti-clericalism and Freemasonry, whereas these were not major themes of the movement in Britain.