Which of the following best describes the U.S. approach to diplomacy in the Pacific region since the late 20th century?

The U.S. approach to diplomacy in the Pacific region since the late 20th century is best characterized as proactive engagement. This strategy involves actively fostering relationships with countries in the region through various means such as trade agreements, diplomatic initiatives, and multilateral cooperation. The U.S. has sought to strengthen alliances, particularly with nations like Japan, Australia, and South Korea, and has increased its presence in international forums to address regional security concerns and promote economic partnerships.

Proactive engagement reflects an understanding that the Pacific region is of strategic importance due to its economic dynamism and geopolitical significance. This approach has been crucial in responding to various challenges, including rising power dynamics, such as those involving China, and addressing issues like regional security and climate change.

The other options do not accurately capture the U.S. strategy in the region. For instance, isolationism implies a withdrawal from international affairs, which does not apply to the continuous diplomatic efforts made by the U.S. Proactively engaging in regional stability and cooperation contradicts a purely military focus, which would ignore diplomatic efforts and alliances. Similarly, neutrality does not align with the active role the U.S. takes in promoting governance and security in the Pacific. Thus, proactive engagement encompasses the comprehensive and active diplomatic actions that