Final answer:
The Monkees were the rock and roll band created by Screen Gems Television in 1966 for an NBC television show, successfully blending music with television and achieving real-world popularity.
Step-by-step explanation:
In 1966, the Screen Gems Television production company, which was a part of Columbia Pictures, responded to the burgeoning popularity of rock and roll by creating a band specifically for an NBC television show. This band was The Monkees, a group that was assembled for the television show of the same name, designed to capitalize on the rock and roll craze that had swept America. The Monkees were conceived as a fictional band in the show, but they quickly became a real-life musical group, gaining significant success with hits such as "I'm a Believer" and "Last Train to Clarksville."
Their televised adventures captured the hearts of the youth, combining the appeal of rock music with the growing influence of television as a medium. Despite some initial reluctance by music purists to accept a band put together by Hollywood, The Monkees proved that rock and roll's hold on pop culture was firm and that it could flourish even under the auspices of a television production company. Their creation and success are a testament to the ways that American entertainment companies adapted to and influenced the cultural landscape during the 1960s.