A national park is a reserve of natural, semi-natural, or developed land that a sovereign state declares or owns. It is most commonly a natural park. Although individual nations designate their own national parks differently (for example, see Martin Luther King, Jr. Memorial in the United States) an international organization, the International Union for Conservation of Nature (IUCN), and its World Commission on Protected Areas, has defined "National Park" as its Category II type of protected areas. While ideas for this type of national park had been suggested previously, the United States established the first such one, Yellowstone National Park, in 1872. The largest national park in the world meeting the IUCN definition is the Northeast Greenland National Park, which was established in 1974.
Meaning of national park:
In 1969 the IUCN (International Union for the Conservation of Nature and Natural Resources) declared a national park to be a relatively large area with particular defining characteristics.A national park was deemed to be a place with one or several ecosystems not materially altered by human exploitation and occupation, where plant and animal species, geomorphological sites and habitats are of special scientific, educative and recreative interest or which contain a natural landscape of great beauty the highest competent authority of the country has taken steps to prevent or eliminate exploitation or occupation as soon as possible in the whole area and to effectively enforce the respect of ecological, geomorphological, or aesthetic features which have led to its establishment.visitors are allowed to enter, under special conditions, for inspirational, educative, cultural, and recreative purposes.
In 1971 these criteria were further expanded upon leading to more clear and defined benchmarks to evaluate a national park. These include:
1)a minimum size of 1,000 hectares within zones in which protection of nature takes precedence...