Besides that, the overseas territories were also displaying impressive economic growth and development rates from the 1920s onwards. Even during the Portuguese Colonial War (1961–1974), a counterinsurgency war against independentist guerrilla and terrorism, the overseas territories of Angola and Mozambique (Portuguese Overseas Provinces at the time) had continuous economic growth rates and several sectors of its local economies were booming. They were internationally notable centres of production of oil, coffee, cotton, cashew, coconut, timber, minerals (like diamonds), metals (like iron and aluminium), banana, citrus, tea, sisal, beer (Cuca and Laurentina were successful beer brands produced locally), cement, fish and other sea products, beef and textiles. Tourism was also a fast-developing activity in Portuguese Africa both by the growing development of and demand for beach resorts and wildlife reserves.