Rock | Definition, History, Artists, Songs, & Facts | Britannica
Rock is a form of popular music that emerged in the 1950s and that by the end of the 20th century was the world’s dominant form of popular music. It originated in the United States and spread …
Rock | Definition, Characteristics, Formation, Cycle, Classification ...
Oct 2, 2025 · Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and …
Rock and roll | History, Songs, Artists, & Facts | Britannica
Oct 11, 2025 · Rock and roll, style of popular music that originated in the United States in the mid-1950s and that evolved by the mid-1960s into the more encompassing international style …
Rock Hudson | Biography, Movies, AIDS, TV Shows, Death, & Facts ...
Nov 13, 2025 · Rock Hudson, American actor noted for his good looks and movie roles during the 1950s and ’60s, including Magnificent Obsession, Giant, and Pillow Talk, and for the TV series …
Standing Rock protests | Summary, Violence, & Outcome - Britannica
Standing Rock protests, campaign undertaken in North Dakota in 2016 and 2017 to halt the construction of the Dakota Access pipeline.
Rock - 1960s, British Invasion, Psychedelic | Britannica
In Britain, as in the rest of Europe, rock and roll had an immediate youth appeal—each country soon had its own Elvis Presley—but it made little impact on national music media, as …
Rock - 80s, 90s, Pop | Britannica
Rock - 80s, 90s, Pop: The music industry was rescued from its economic crisis by the development in the 1980s of a new technology, digital recording. Vinyl records were replaced …
Rock, Massachusetts, Colony, Map, History, & Facts - Britannica
Nov 13, 2025 · Plymouth Rock, first identified in 1741, became a symbol of freedom in 1774 when it was split by being dragged to Liberty Pole Square in pre-Revolutionary agitation. It now rests …
Rock - Structure, Texture, Composition | Britannica
Oct 2, 2025 · Rock - Structure, Texture, Composition: Physical properties of rocks are of interest and utility in many fields of work, including geology, petrophysics, geophysics, materials …
Little Rock Nine | Names, Significance, Facts, & Segregation
Nov 8, 2025 · The confrontation in Little Rock drew international attention to racism and civil rights in the United States as well as to the battle between federal and state power.