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.
Trent–Severn Waterway
In the midst of construction, in 1837 the Upper Canada Rebellion broke out. Although quickly suppressed, the Rebellions of 1837 served to worry the Imperial government enough to appoint John Lambton, 1st Earl of Durham to fix the problems. In spite of holding the position of Governor General for only a brief period before resigning, his "Report on the Affairs of British North America" was implemented in large part and caused sweeping changes to the government. The newly merged Province of Canada had a single parliament with special rules intended to balance the power of the French and English speaking colonies.