Some people in 18th century Europe thought that point culture would bring enlightenment and end despotism because at these reasons.
(i) Spreading of new Ideas after the coming of print culture: the ideas of scientists and philosophers now became more accessible to the common people. Ancient and medieval scientific texts were compiled and published.
(ii) Books as Medium of Progress by the 18th century: books became a medium of spreading progress and enlightenment which could change society and the world.
It was also believed that the books could liberate society from despotism and tyranny.
(iii) Scientific Discoveries: Maps and more accurate scientific diagrams were widely printed when scientists like Isaac Newton began to publish their discoveries which influenced the scientifically-minded readers.
(iv) Ideas of Enlightened Thinkers: Print popularised the ideas of the enlightened thinkers like Martin Luther, Jean Jacques Rousseau, Thomas Paine and Voltaire who attacked the authority of the church and the despotic power of the state.
(v) A New Culture of Dialogue and Debate: The printing press was believed to be the most powerful engine of progress and public opinion.