I believe it's the <span>Treaty of Brest-Litovsk, correct me if I'm wrong. </span>
He said his own opinion and not everyone did that, so he drawed attention.
I think the answer you may be looking for is he invented the printing press. His most famous accomplishment is the Gutenberg Bible. He is known as the father of printing. However, if you research it, you'll find different results, such as the Chinese beat Gutenberg by a full thousand years in that they invented the first printing press.
Answer:
A
Explanation:
Hope this helped! please tell me if im wrong.