Final answer:
American governmental policies have deeply changed societal norms and everyday life, especially through the economic and political impacts following the American Revolution and the establishment of principles based on Enlightenment philosophy.
Step-by-step explanation:
Throughout American history, the effects of governmental policies have dramatically transformed the lives of its citizens. The impact of war, such as the American Revolution, brought not only political independence from Great Britain but also redefined American identity and wrought new economic challenges. As early Americans adapted to a post-war reality, they faced rampant inflation, shortages of goods, and the struggles of rebuilding a fledgling economy. The introduction of enlightened governmental principles, inspired by thinkers like Rousseau and Montesquieu, influenced the structure of the new nation, promoting the separation of powers and the concept of governance by the people's general will. These changes fundamentally altered both the political landscape and the daily lives of Americans, showcasing the considerable influence of war and revolutionary ideology on society.