Question: Where is the German campaign in the country Alto Zambeze is located?

full_context: Document 1: German campaign in Angola: Before the official declaration of war between Germany and Portugal (March 1916), German and Portuguese troops clashed several times on the border between German South West Africa and Portuguese Angola. The Germans won most of these clashes and were able to occupy the Humbe region of southern Angola until Portuguese control was restored a few days before the British campaign out of South Africa defeated the Germans.
Document 2: Alto Zambeze: Alto Zambeze is a municipality in the Moxico province of Angola. It is situated near the border with Zambia and has about 40 thousand inhabitants. The municipality's seat is the town of Cazombo, on the Zambezi river.
Document 3: Sesheke District: Sesheke District is a district of Zambia, located in Western Province. The capital lies at Sesheke. As of the 2000 Zambian Census, the district had a population of 78,169 people. It contains Sioma Ngwezi National Park and contains part of the Zambezi River, which forms Zambia's border with Namibia.
Document 4: History of Angola: Angola is a country in southwestern Africa. The country's name derives from the Kimbundu word for king. It was first settled by San hunter - gatherer societies before the northern domains came under the rule of Bantu states such as Kongo and Ndongo. From the 15th century, Portuguese colonists began trading, and a settlement was established at Luanda during the 16th century. Portugal annexed territories in the region which were ruled as a colony from 1655, and Angola was incorporated as an overseas province of Portugal in 1951. After the Angolan War of Independence which ended with an army mutiny and leftist coup in Lisbon, Angola's independence was achieved on November 11, 1975 through the Alvor Agreement. After independence, Angola later entered a period of civil war that lasted up until 2002.
Document 5: Chavuma: Chavuma is a town in North Western Zambia, lying immediately south of the border with Angola. The town is approximately 1,100 kilometers from Lusaka and 11 kilometers from the Angolan border town of Kalipande. It lies on the Zambezi River and the M8 road. Local attractions include the Chavuma Falls, while a market takes place on the border, permitting people from both nations to trade.
Document 6: British Empire: Britain's fears of war with Germany were realised in 1914 with the outbreak of the First World War. Britain quickly invaded and occupied most of Germany's overseas colonies in Africa. In the Pacific, Australia and New Zealand occupied German New Guinea and Samoa respectively. Plans for a post-war division of the Ottoman Empire, which had joined the war on Germany's side, were secretly drawn up by Britain and France under the 1916 Sykes–Picot Agreement. This agreement was not divulged to the Sharif of Mecca, who the British had been encouraging to launch an Arab revolt against their Ottoman rulers, giving the impression that Britain was supporting the creation of an independent Arab state.
Document 7: Northern Seven Years' War: 1762 brought two new countries into the war. Britain declared war against Spain on 4 January 1762; Spain reacted by issuing their own declaration of war against Britain on 18 January. Portugal followed by joining the war on Britain's side. Spain, aided by the French, launched an invasion of Portugal and succeeded in capturing Almeida. The arrival of British reinforcements stalled a further Spanish advance, and the Battle of Valencia de Alcántara saw British-Portuguese forces overrun a major Spanish supply base. The invaders were stopped on the heights in front of Abrantes (called the pass to Lisbon) where the Anglo-Portuguese were entrenched. Eventually the Anglo-Portuguese army, aided by guerrillas and practicing a scorched earth strategy, chased the greatly reduced Franco-Spanish army back to Spain, recovering almost all the lost towns, among them the Spanish headquarters in Castelo Branco full of wounded and sick that had been left behind.
Document 8: Tete, Mozambique: Tete is the capital city of Tete Province in Mozambique. It is located on the Zambezi River, and is the site of two of the four bridges crossing the river in Mozambique. A Swahili trade center before the Portuguese colonial era, Tete continues to dominate the west-central part of the country and region, and is the largest city on the Zambezi. In the local language, Nyungwe, Tete (or Mitete) means "reed."
Document 9: Military history of South Africa during World War II: On 4 September 1939, the United Party caucus refused to accept Hertzog's stance of neutrality in World War II and deposed him in favour of Smuts. Upon becoming Prime Minister, Smuts declared South Africa officially at war with Germany and the Axis. He immediately set about fortifying South Africa against any possible German sea invasion because of South Africa's global strategic importance controlling the long sea route around the Cape of Good Hope.
Document 10: Gwembe: Gwembe is a small town in Southern Province of Zambia with a population of about 2000 people. It is the largest town in Gwembe District which on Lake Kariba between Siavonga and Sinazongwe Districts. It used to be the District Headquarters until it moved to Munyumbwe some 30 km east of the town.
Document 11: Germans: In 1866, the feud between Austria and Prussia finally came to a head. There were several reasons behind this war. As German nationalism grew strongly inside the German Confederation and neither could decide on how Germany was going to be unified into a nation-state. The Austrians favoured the Greater Germany unification but were not willing to give up any of the non-German-speaking land inside of the Austrian Empire and take second place to Prussia. The Prussians however wanted to unify Germany as Little Germany primarily by the Kingdom of Prussia, whilst excluding Austria. In the final battle of the German war (Battle of Königgrätz) the Prussians successfully defeated the Austrians and succeeded in creating the North German Confederation.
Document 12: History of Germany during World War I: During World War I, the German Empire was one of the Central Powers that lost the war. It began participation in the conflict after the declaration of war against Serbia by its ally, Austria - Hungary. German forces fought the Allies on both the eastern and western fronts, although German territory itself remained relatively safe from widespread invasion for most of the war, except for a brief period in 1914 when East Prussia was invaded. A tight blockade imposed by the Royal Navy caused severe food shortages in the cities, especially in the winter of 1916 -- 17, known as the Turnip Winter. At the end of the war, Germany's defeat and widespread popular discontent triggered the German Revolution of 1918 -- 19 which overthrew the monarchy and established the Weimar Republic.
Document 13: Zambezi District: Zambezi District is a district of Zambia, located in North-Western Province. The capital lies at Zambezi. As of the 2000 Zambian Census, the district had a population of 64,963 people.
Document 14: Portugal: In the 20th century, Portugal engaged in two major conflicts: World War I and the Portuguese Colonial War (1961–1974). After the end of the Portuguese Empire in 1975, the Portuguese Armed Forces have participated in peacekeeping missions in East Timor, Bosnia, Kosovo, Afghanistan, Somalia, Iraq (Nasiriyah) and Lebanon. Portugal also conducted several independent unilateral military operations abroad, as were the cases of the interventions of the Portuguese Armed Forces in Angola in 1992 and in Guinea-Bissau in 1998 with the main objectives of protecting and withdrawing of Portuguese and foreign citizens threatened by local civil conflicts.
Document 15: Geography of Angola: Angola is located on the western Atlantic Coast of Central Africa between Namibia and the Republic of the Congo. It also is bordered by the Democratic Republic of the Congo and Zambia to the east. The country consists of a sparsely watered and somewhat sterile coastal plain extending inland for a distance varying from . Slightly inland and parallel to the coast is a belt of hills and mountains and behind those a large plateau. The total land size is . It has an Exclusive Economic Zone of .
ground_truth: Portuguese Angola
sub_queries: Alto Zambeze >> country Answer: Angola
German campaign in Angola >> location Answer: Portuguese Angola