Lower Canada Rebellion
When news of the arrest of the Patriote leaders reached Upper Canada, William Lyon Mackenzie launched an armed rebellion in December 1837. In the meantime, filibusters from the United States, the Hunter Patriots, formed a small militia and attacked Windsor, Upper Canada, to support the Canadian Patriots. This resulted in the declaration of martial law by the Lower Canadian government.
Conservatism in Canada
After the failure of radical liberalism during the Rebellions of 1837, a new set of moderate liberals, led by Robert Baldwin in Canada West, Louis-Hippolyte Lafontaine in Canada East and Joseph Howe in Nova Scotia rose to prominence. They campaigned for and won responsible government by creating broad coalitions that took in liberals, moderates, and conservatives.