Complex sentence: In the 1950s and 1960s, the military, governments and other organizations had computer systems, and the Whole Earth movement of the 1960s led to the inspiration and eventual creation of the World Wide Web.
Split into simpler sentences: In the 1950s and 1960s the military, governments and other organizations had computer systems. The Whole Earth movement of the 1960s led to the inspiration and eventual creation of the World Wide Web.