<P> Many Algerians had fought as French soldiers during the First World War . Thus Muslim Algerians felt all the more unfair that their votes were not equal to the other Algerians especially after 1947 when the Algerian Assembly was created . This assembly was composed of 120 members . Muslim Algerians who represented about 9 million people could designate 50% of the Assembly members while 900,000 non-Muslim Algerians could designate the other half . Moreover, a massacre occurred in Sétif May 8, 1945 . It opposed Algerians who were demonstrating for their national claim to the French Army . After skirmishes with police, Algerians killed about 100 ethnic French . The French army retaliated harshly . Thousands of Algerians probably died . It triggered a radicalisation of Algerian nationalists and it can be considered the beginning of the Algerian War . </P> <P> In 1956, about 512,001 French soldiers were in Algeria . No resolution was imaginable in the short term . An overwhelming majority of French politicians were opposed to the idea of independence while independence was gaining ground in Muslim Algerians' mind . France was mired and the Fourth Republic collapsed on this issue . In 1958, Charles de Gaulle's return to power was supposed to bring back Algeria in the bosom of France as thought French generals in Algeria . But pragmatism impelled De Gaulle to consent independence in 1962 after an aborted military coup in Algeria . </P> <P> Portugal built a five - century - long global empire . Portuguese overseas expansion began in the 15th century, thanks to several factors that gave the small coastal nation an advantage over its larger European neighbours . First, in the 14th century, Portuguese shipbuilders invented several new techniques that made sailing in the stormy Atlantic Ocean more practical . They combined elements of different types of ships to construct stronger, roomier and more manoeuvrable caravels . They also took advantage of more reliable compasses for navigation, and benefited from the school for navigation created by Prince Henry the Navigator (1394--1460) at Sagres in 1419 . Starting with voyages to Madeira and the Azores (islands in the Atlantic) in the first part of the 14th century, the Portuguese systematically extended their explorations as far as Japan by the 16th century . In the process, they established forts and settlements along the West and East African coasts . In the 16th through 18th centuries, the Portuguese lost their lead to other European nations, notably England and France, but played a major role in the slave trade to satisfy the demand for labour in Brazil and other American markets . By the beginning of the 19th century, Portugal controlled outposts at six locations in Africa . One was the Cape Verde Islands, located about 700 miles due west of Dakar, Senegal . Claimed for Portugal by Diogo Gomes about 1458, this archipelago of eight major islands was devoted to sugar cultivation using slaves taken from the African mainland . The Portuguese once had extensive claims on the West African coast--since they were the first Europeans to explore it systematically--but by 1800 they were left with only a few ports at the mouth of the Rio Geba in what is now known as the Guinea - Bissau . To the east, the Portuguese controlled the islands of São Tomé and Príncipe, located south of the mouth of the Niger River . Like the Cape Verde Islands, they were converted to sugar production in the early 16th century using slaves acquired on the mainland in the vicinity of the Congo River . By the end of the 19th century, Portuguese landowners had successfully introduced cocoa production using forced African labour . Further south, the Portuguese claimed both sides of the mouth of the Congo River, as well as the Atlantic coast as far south as the Rio Cunene . In practical terms, Portugal controlled port cities like those of Cabinda (north of the Congo River mouth), Ambriz (south of the Congo's mouth), Luanda and Benguela (on the Angolan coast) plus some river towns in the Angolan interior . </P> <P> The last area claimed by Portugal in Africa was along the southeast coast on either side of the mouth of the Zambezi River . After reaching this area, known as the Swahili Coast, at the end of the 15th century, the Portuguese came to dominate most of it by the end of the 16th century . During the 17th century, they lost control of everything north of Cape Delgado to Arabs from Oman (who established the Sultanate of Zanzibar), leaving them with major ports at Mozambique, Quelimane, and Lourenço Marques, plus settlements along the Zambezi and other rivers . </P>

When did most countries of sub-saharan africa gain independence