Television networks are organizations that produce and distribute television programs to viewers. They operate by broadcasting content over the airwaves or through cable and satellite systems. Major networks include ABC, NBC, and CBS, which offer a variety of shows, including news, dramas, and comedies. These networks often create original programming and acquire content from other producers. They reach large audiences by scheduling shows at specific times, allowing viewers to watch together. Additionally, many networks have online platforms, enabling viewers to stream shows on-demand, further expanding their reach and accessibility.