It is the intellectual labour which plays the key role in revealing human civilization

The statement is true because intellectual labor is the type of labor that helps advance human societies the most.

Explanation:

Intellectual labor focuses on studying, research, and improving people's lives by applying knowledge in ways that make work more efficient, and this is what we know as technology.

Intellectual labor is what has brought us important advancements as the Internet, computers, cars, railroads, gunpowerd, and fertilizers, all of which are crucial for modern human civilization.