Official language a hurricane, pandemic, or...another terrorist attack". Professor of politics Alan Patten argues that disengagement (officially ignoring the issue) works well in religious issues but that it is not possible with language issues because it must offer public services in some language. Even if it makes a conscious effort not to establish an official language, a "de facto" official language, or the "national language", will nevertheless emerge. Indeed, two-thirds of Americans believe that English is the United States' official language. Sometimes an official language definition can be motivated more by national identity than by linguistic concerns. When Yugoslavia dissolved in 1991,
Ecoregions of Zambia artificial reservoir), together with the smaller lakes such as Mweru Wantipa and Itezhi-Tezhi reservoir, and numerous lagoons and swamps cover about 5% of Zambia. Together with their associated rivers, the WWF categorises these freshwater bioregions in Zambia: Zambezi Basin made up of (not shown on the map): Ecoregions of Zambia The biomes and ecoregions in the ecology of Zambia are described, listed and mapped here, following the World Wildlife Fund's Global 200 classification scheme for terrestrial ecoregions, and the WWF freshwater bioregion classification for rivers, lakes and wetlands. Zambia is in the Afrotropic biogeographic realm (or ecozone) of the scheme.