The correct answer is A) Increased free speech led to changes in popular opinion. During the French Revolution of 1848, this period of time touched on the Enlightenment Age where people such as Jean-Jacques Rousseau and Voltaire were prominent and who were two philosophers who wrote many texts about the equality of citizens. This was very close to home for the French citizens who were leading miserable lives due to the expenses the French monarchy (an extremely tiny percent of the population vs. the 97 percent population of the proletariat) who were spending unabashedly, while the majority of French people barely had anything to eat.
Legalism was the primary philosophy used within the qin dynasty
<span>Archduke Franz Ferdinand</span>
The population increased as soldiers were returning home
By approval, I think you mean by the delegates from each state had approved it. The problem was that the states themselves had to approve it. That seemed like a cumbersome process, but you have to remember that democracy works on the will of the people and each state had to ratify it keeping in mind that there were still problems: it was not a slam dunk.