The main way in which the development of the steam locomotive was so important to industrialization is that it allowed for steam to be used in factories that could use the steam power to run engines that could assemble products and create textiles with unprecedented speed.
Enlightenment thinkers used logic and reason to solve problems. People who used enlightenment thinking seem the logic and reason in church and state being separated as well as the leadership of them.
After the American and French revolutions, there were many changes. America established a just government that protected the rights of their citizens. As for France, the third estate gained more rights for all male citizens. For example, before the revolution, the first and second estate did not have to pay any taxes. This changed, however, after the French revolution.
I think its either a or b mostly think its a