What are the inventions revolutionized medieval society

The printing press.

Explanation:

The printing press was the invention that revolutionized medieval society. It is considered the most important invention of the history.

The printing press was developed by Johannes Gutenberg in 1455. The first printing press was invented using an old winepress. The printing press was proved to be an important invention as it enabled to print the books in large numbers and at an affordable price. The 'printing revolution' brought a large number of books available for reading to a great portion of the society. With the invention of the printing press, Gutenberg is also known for his invention of oil-based ink that was more durable than water-ink.

The first book to be printed by this invention was the Bible using oil-based ink.

Thus, the correct answer is the printing press.