Although the Rebellions of 1837 were motivated in part by this type of dissatisfaction, Canadian resentment of British rule never reached the degree that led to the American Revolution in 1775. Notably, Canada's population growth in the late 18th and early 19th centuries was spurred largely by United Empire Loyalists, who left the American colonies during the Revolution because of their loyalty to Great Britain. In the period from 1790 to 1837, imperial officials repeatedly denounced American-style republicanism and tried to suppress it.