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,
Moldova–Ukraine border Moldova–Ukraine border The modern Moldova–Ukraine border, the official border between Republic of Moldova and Ukraine, was established after the dissolution of the Soviet Union. The length of the inland border is , of which , is fluvial (i.e., along rivers) and , is land border. About , of it constitutes the "de facto" border between Ukraine and the unrecognized breakaway republic of Transnistria. The border runs from the northern Romania-Moldova-Ukraine tripoint in the northwest of the country, , from the Ukrainian village and border crossing of Mamalyha, Ukraine to Criva, Briceni, Moldova. It runs east until the city and border