| 1909 | Independent Moving Pictures is founded |
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| 1912 | Universal Pictures is founded after IMP merges with smaller studios |
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| 1915 | Universal City is opened |
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| 1926 | NBC is founded |
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| 1928 | Walter Lantz Productions (later Universal Animation Studios) is established |
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| 1943 | MCA Inc. establishes Revue Studios (later Universal Television) |
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| 1946 | Universal Pictures merges with International Pictures to become Universal-International Pictures |
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| 1952 | Decca Records acquires Universal-International |
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| 1962 | Universal-International is renamed Universal after MCA acquires Universal-International Philips sets up a joint-venture with Siemens to form Grammophon-Philips Group |
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| 1963 | American Cable Systems is founded |
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| 1964 | Universal Studios Hollywood opens |
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| 1968 | American Cable Systems rebrands to Comcast |
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| 1972 | Grammophon-Philips Group is renamed PolyGram |
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| 1975 | Filmworks is founded |
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| 1976 | Filmworks becomes Casablanca Record & Filmworks |
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| 1980 | PolyGram renames Casablanca Record & Filmworks to PolyGram Pictures MCA Videocassette‚ Inc. (later Universal Pictures Home Entertainment) is established |
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| 1983 | PolyGram Pictures closes |
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| 1984 | Walter Lantz Productions' assets are sold to Universal Telemundo is founded |
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| 1986 | General Electric re-purchases its former subsidiary RCA for $6.4 billion, including NBC and a stake in A&E |
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| 1987 | PolyGram Movies is founded |
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| 1988 | Siemens sells 50% of PolyGram to Philips |
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| 1990 | Universal Studios Florida opens PolyGram Movies is renamed PolyGram Filmed Entertainment Matsushita acquires MCA Sky Television and British Satellite Broadcasting merge to form British Sky Broadcasting Universal Cartoon Studios (later Universal Animation Studios) is established |
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| 1991 | October Films is founded |
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| 1992 | Universal Pictures sets up a joint-venture with PolyGram Filmed Entertainment to form Gramercy Pictures |
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| 1994 | DreamWorks Pictures and DreamWorks Animation are founded |
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| 1995 | Seagram acquires Universal through its acquisition of MCA |
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| 1996 | Seagram sells 50% of Gramercy Pictures to PolyGram |
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| 1997 | Seagram acquires October Films |
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| 1998 | Seagram acquires PolyGram Filmed Entertainment Barry Diller purchases Universal's domestic television assets Universal Television is renamed Studios USA Television |
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| 1999 | PolyGram Filmed Entertainment is folded into Universal Pictures PolyGram Video is renamed USA Home Entertainment Universal Studios Florida expands to become Universal Orlando Resort Gramercy Pictures, Interscope Communications, and October Films are merged into USA Films |
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| 2000 | Seagram is sold to Vivendi and merged with StudioCanal to become Vivendi Universal Entertainment |
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| 2001 | Grand opening of Universal Studios Japan Vivendi purchases Studios USA |
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| 2002 | NBC acquires Telemundo and Bravo Studios USA assets are folded into Universal Focus Features is formed Comcast acquires AT&T Broadband for $44.5 billion |
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| 2004 | GE and Vivendi merge NBC and Universal into NBCUniversal |
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| 2005 | Comcast sets up a joint-venture with PBS, Sesame Workshop & HIT Entertainment to form PBS Kids Sprout Comcast & Time Warner Cable jointly acquire Adelphia Cable assets for $17.6 billion |
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| 2007 | Illumination is founded |
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| 2011 | Vivendi divests interest in NBCU; Comcast buys 51% of NBCU from GE, turning it into a limited liability company NBCUniversal Archives is founded Grand opening of Universal Studios Singapore |
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| 2012 | NBCUniversal divests its A&E Networks minority stake |
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| 2013 | Comcast buys GE's remaining 49% of NBCU Comcast/NBCU assumes full ownership of Sprout |
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| 2015 | Amblin Partners is founded Grand opening of DreamWorks Tours: Shrek's Adventure! (partnership with Merlin Entertainments (currently owned by KIRKBI)) Focus Features revives Gramercy Pictures |
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| 2016 | NBCU acquires DreamWorks Animation Gramercy Pictures assets are folded into Focus Features |
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| 2017 | NBCU acquires a minority stake in Amblin Partners Sprout relaunches as Universal Kids (shut down) |
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| 2018 | Comcast acquires Sky from 21st Century Fox |
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| 2020 | NBCU launches Peacock |
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| 2026 | Grand opening of Universal Kids Resort NBCU exits the first-run syndication business |
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