Technological systems can be considered very social because

they have no subsystems

they require a lot of maintenance

they are built by people to serve society

they communicate with many different elements

Hello!

The answer is They are built by people to serve society.

Technological systems are a set of elements and variables that give context to the human technical action.

Examples of technological systems are mechanic systems (a mill), electric systems (a lamp) or organizations (like companies).

The thing they all have in common is that they are built by people to serve society, and that makes them very social because their performance will affect society directly. For example, the failure of the electric system of a town could cause riots or robberies.