Final answer:
The most significant social change brought by revolution varies, but political upheaval is often seen as crucial due to its structural impact on governance. Economic restructuring is also significant, as displayed in the market revolution's effect on social class and wealth distribution.
Step-by-step explanation:
When considering the most significant social change brought about by revolution, it's important to weigh the impact across various spheres of society such as economic, cultural, political, and technological. One could argue that political upheaval is often the most significant because it typically leads to structural changes in governance, which can have lasting effects on all other aspects of society. However, some revolutions are more characterized by their economic restructuring, like the market revolution that brought significant social and economic changes to the United States, leading to the formation of distinct social classes and changes in wealth distribution.
For example, the French Revolution involved a profound restructuring of society that saw the end of feudal privileges, the promotion of secular values over religious authority, and the conception of modern citizenship - these were largely political changes with wide-reaching social consequences. Similarly, the Industrial Revolution created a significant divide between Western Europe/America and the rest of the world, altering economies, social structures, and eventually, political power balances globally.