America's policy changed from isolationist to more active involvement in the world. Select an I for those items that evidence isolationism, a W for those for world activism, and an H for those that indicate activism only in the Western Hemisphere.

1. The Panama Canal
2. Early part of World War I
3. The Platt Amendment
4. Before the Spanish-American War
5. The Monroe Doctrine
6. War on the Central Powers
7. The Open Door Policy

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e

Explanation:

a)scientists

explanation:

the national defense education act had two main goals. the first one was to provide personal that was oriented to defense, including scholars, engineering students and so on. the other goal was to provide financial assistance for the students who would be enrolling at colleges and universities in the 1960s.