self-sufficiency designates an autonomous, thus from other persons or institutions independent Lebensführung.
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this can mean, in the everyday life on the active assistance of other humans not to be dependent (housekeeping, hygiene, buying etc.), as it is frequently not (more) possible with old, ill or handicapped humans.
economic aspects in the economic sense of self-sufficiency, if humans the material needs of the daily life (meal, drinking, living etc.) create themselves to a large part and do not only fall back to the products offered in the market. This concerns in particular the self cultivation and the production of food and utensils of all kinds.
A well-known self-support is the Englishman John Seymour, which released a world-wide self-sufficiency movement with its books into the 1970er years, and this very day serves many humans as model for an independent Lebensführung.
for example Inuits are self-support her are closed nearly from the external world and must each hunted animal completely use for example we partially Fleich to the meal use chords to become often as dog linen or fishing line taken. And the remainder as fishing line see taken also: Subsistenzwirtschaft, DIY