Angola is 5 times larger than São Paulo (Brazil).
Area: 1,246,700 km2 World Factbook
Population: 19,088,106 (July 2014) World Factbook
Angola, officially the Republic of Angola, is a country in Southern Africa bordered by Namibia on the south, the Democratic Republic of the Congo on the north, and Zambia on the east; its west coast is on the Atlantic Ocean and Luanda is its capital city. Wikipedia
São Paulo is a state in Brazil. It is the major industrial and economic powerhouse of the Brazilian economy. Named after Saint Paul, São Paulo has the largest population, industrial complex, and economic production in the country. It is the richest state in Brazil. Wikipedia