Which level of analysis deals with global patterns of behavior among states?

The correct choice, focusing on the international system level of analysis, emphasizes how global patterns of behavior among states are understood. This level of analysis examines the interactions and relationships that occur between states on a global scale, including diplomacy, alliances, trade, and conflict. It looks at how the structure of the international system influences state behavior, considering factors such as the distribution of power, international norms, and systemic constraints.

By focusing on global patterns, this level of analysis allows for a broader understanding of international relations, as it provides insights into how different states interact with one another and how these interactions shape global dynamics. The international system level highlights the importance of looking beyond individual states to understand the larger patterns that define state interactions, making it critical for analyzing geopolitical trends and international outcomes.

In contrast, the other options imply a narrower focus. For example, analyzing the nation-state level typically concentrates on the domestic factors within individual states. The regional system focuses on interactions and relationships within a specific geographical area, while the local system examines interactions at much smaller, often community or sub-state levels. None of these options capture the comprehensive, global approach that is essential for understanding state behavior in the context of international relations, making the international system the appropriate choice for this question.