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Before the Advent of Intercoms, Old Mansions Had a Sash

question 51

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Before the advent of intercoms, old mansions had a sash in each room. Each sash was connected to a bell on a master board in the servants' office. When someone pulled a sash in a particular room, a bell corresponding to the room would ring on the master board, informing a servant where to go to provide assistance.
This system is similar to which of the following?


Definitions:

Product Placement

A marketing strategy where branded goods or services are placed in a context usually devoid of ads, such as movies, the story line of television shows, or news programs.

Story Line

The plot or sequence of events in a book, play, movie, or narrative.

Media Pluralism

The state or condition where multiple and diverse media sources are available, allowing for a variety of viewpoints and opinions.

Media Content

The information, artistic elements, and forms of entertainment provided through various communication channels.

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