In 1841, Britain united the colonies of Upper and Lower Canada into the Province of Canada. This was in response to the violent rebellions of 1837–38. The Durham Report (1839) laid out the guidelines to create the new colony with the Act of Union in 1840. The Province of Canada was made up of Canada West (formerly Upper Canada) and Canada East (formerly Lower Canada). The two regions were governed jointly until Confederation in 1867. Canada West then became Ontario and Canada East became Quebec.