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nonlinear dynamics
(Encyclopedia) nonlinear dynamics, study of systems governed by equations in which a small change in one variable can induce a large systematic change; the discipline is more popularly known as chaos…nullification
(Encyclopedia) nullification, in U.S. history, a doctrine expounded by the advocates of extreme states' rights. It held that states have the right to declare null and void any federal law that they…civil rights
(Encyclopedia) civil rights, rights that a nation's inhabitants enjoy by law. The term is broader than “political rights,” which refer only to rights devolving from the franchise and are held usually…Emigrant Aid Company
(Encyclopedia) Emigrant Aid Company, organization formed in 1854 to promote organized antislavery immigration to the Kansas territory from the Northeast. Eli Thayer conceived the plan as early as Feb…home schooling
(Encyclopedia) home schooling, the practice of teaching children in the home as an alternative to attending public or private elementary or high school. In most cases, one or both of the children's…literary frauds
(Encyclopedia) literary frauds, manuscripts that are presented to the public as works of famous authors but that are actually forgeries or imitations. Literary frauds are perpetrated for various…Petrarch
(Encyclopedia) PetrarchPetrarchpēˈträrk [key] or Francesco PetrarcaFrancesco Petrarcafränchĕsˈkō pāträrˈkä [key], 1304–74, Italian poet and humanist, one of the great figures of Italian literature.…Delian League
(Encyclopedia) Delian LeagueDelian Leaguedēˈlēən [key], confederation of Greek city-states under the leadership of Athens. The name is used to designate two distinct periods of alliance, the first…garden city, in city planning
(Encyclopedia) garden city, an ideal, self-contained community of predetermined area and population surrounded by a greenbelt. As formulated by Sir Ebenezer Howard, the garden city was intended to…Galápagos Islands
(Encyclopedia) Galápagos Islands Galápagos Islands gəlăpˈəgōs [key] [Span.,=tortoises], archipelago and province, 3,…