The answer is George Stephenson. He is credited for the inventing of the steam locomotive called the rocket or "Stephenson's Rocket"
<span>Paradoxically, Saint-Simon both agreed with and
challenged aspects of de Tocqueville's arguments. Saint- Simon wanted to maintain the current way of life, but while arguing for reforms.
Unlike de Tocqueville, Saint- Simon was an advocate (supporter) of a centralised form of government.</span>
I believe your answer is B. people speaking their ideas against government in writing (sorry if I'm wrong)