Answer:
Step-by-step explanation:
From 1648 to 1815, Europe experienced significant changes in international relations, the rise of the nation-state, and political revolutions. The Treaty of Westphalia established the concept of the nation-state and a balance of power system in Europe. The rise of the nation-state contributed to the growth of nationalism, and political revolutions such as the American and French Revolutions brought about significant changes in the political and social order of Europe.