-became more radical in 1770s --> fierce opposition to British crown- 1770 he had come to the conclusion that american colonists should allow for British control, given some adjustments to current order of course- chaos and even violence including the recent Boston, came as a result of five years worth of instability, Massacre of 1770 in which British forces fired into a crowd of townspeople, killing five.- violence --> solution of revolution
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.
