Pure blue, in the middle, has a wavelength of 470 nanometres. In painting and traditional colour theory, blue is one of the three primary colours of pigments, along with red and yellow, which can be mixed to form a wide gamut of colours.
Endowed with significant natural resources, including ample fertile land, regular rainfall, and mineral deposits, it is thought that Uganda could feed all of Africa if it were commercially farmed. The economy of Uganda has great potential, and it appeared poised for rapid economic growth and development.gricultural products supply nearly all of Uganda's foreign exchange earnings, with coffee alone (of which Uganda is Africa's leading producer) accounting for about 27% of the country's exports in 2002.
The key natural resources of Ethiopia include gold, copper and platinum. The countryâs chief mineral and mining operations in 2010 included gold, cement, crushed stone and dimension stone production.thiopia is a significant exporter of gold and the countryâs largest gold mine is Lega Dembi in the Sidamo province. Midroc Gold, a company that operated Lega Dembi, produced about 3,100 kg/yr of gold.