Maria I of Portugal forced Portugal to cede Olivença and other border towns to Spain. (This cession is not recognized by the present Portuguese government, and the country officially considers those territories still to be Portuguese possessions.) On September 29, 1801 John VI signed the Treaty of Madrid (1801), ceding half of Guyana to France, which became French Guiana. The refusal of the Portuguese government to join the French-sponsored Continental Blockade against Britain culminated in the late 1807 Franco-Spanish invasion of Portugal led by General Junot. The ultimate Napoleonic plan for Portugal was to split it into three sections. The northern parts of Portugal,
Pinecreek–Piney Border Crossing Pinecreek–Piney Border Crossing The Pinecreek–Piney Border Crossing connects the communities of Pinecreek, Minnesota and Piney, Manitoba on the Canada–U.S. border. It is connected by Minnesota State Highway 89 on the American side and Manitoba Highway 89 on the Canadian side. Although operated by the Minnesota Department of Transportation, the adjacent Piney Pinecreek Border Airport's runway crosses the international border. There is an access drive to the airport on each side of the border. Small aircraft can land at this airport from either country, be inspected by officers from the other country and if admitted, continue to fly into the other