groundwork
71Historiography — See also: Historian Historiography refers either to the study of the history and methodology of history as a discipline, or to a body of historical work on a specialized topic. Scholars discuss historiography topically – such as the… …
72History of mathematics — A proof from Euclid s Elements, widely considered the most influential textbook of all time.[1] …
73Economy of North Korea — Economic centre of North Korea Currency North Korean won Fiscal year …
74Punk rock — This article is about the music genre. For the play of the same name, see Punk Rock (play). Punk rock Stylistic origins Rock and roll • folk • rockabilly • ska • surf rock • garage rock • …
75Rock and roll — Infobox Music genre name=Rock and Roll color = white bgcolor = crimson stylistic origins=Gospel Folk music nowrap|Blues (especially Jump blues) Swing Country music Boogie woogie Rhythm and blues cultural origins= United States in the period up to …
76Platform game — This article is about the computer and video game genre. For platformer units in petroleum refining, see Catalytic reforming …
77History of video games — Part of a series on …
78Zbigniew Brzezinski — 10th United States National Security Advisor In office January 20, 1977 – January 20, 1981 President Jimmy Carter …
79Crisis on Infinite Earths — Cover to Crisis on Infinite Earths #1. Art by George Pérez. Publication information Publisher DC …
80Solipsism — (Latin: solus , alone + ipse , self) is the philosophical idea that My mind is the only thing that I know exists. Solipsism is an epistemological or metaphysical position that knowledge of anything outside the mind is unjustified. The external… …
