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,
Portugal Working Equitation Championship. In water sports, Portugal has three major sports: swimming, water polo and surfing. The country also annually hosts one of the stages of the World Surf League Men's "Championship Tour", the MEO Rip Curl Pro Portugal in the Supertubos beach in Peniche. Northern Portugal has its own original martial art, "Jogo do Pau", in which the fighters use staffs to confront one or several opponents. Other popular sport-related recreational outdoor activities with thousands of enthusiasts nationwide include airsoft, fishing, golf, hiking, hunting and orienteering. Portugal is one of the world's best golf destinations. It has received several