What new American attitude toward international affairs led to the building-up of the U.S. Navy?

The building-up of the U.S. Navy during the period of American imperialism was significantly influenced by a willingness to go to war to protect American interests overseas. This attitude emerged from the belief that a strong military presence, particularly a powerful navy, was essential for securing American interests in an increasingly competitive global environment. The late 19th and early 20th centuries saw the United States seeking to expand its influence, engage in territorial acquisitions, and safeguard its trade routes.

The construction of a formidable navy was not only about defense but also about demonstrating American strength and readiness to engage militarily if necessary, reflecting the growing belief in the necessity of a proactive foreign policy. Alfred Thayer Mahan's influential ideas on sea power underscored the importance of naval strength in global politics, encouraging the construction of a larger fleet. This strategy was evident in events such as the Spanish-American War, where naval power played a crucial role in securing victory and establishing the U.S. as an imperial power.

In contrast, other options focus on motivations that do not directly relate to military buildup for protective measures. While forging alliances or hoping for economic cooperation are significant aspects of international relations, they do not specifically drive the need for a stronger navy. Similarly, anger at