why did some policy makers feel the us had to switch from isolationism
to a more expanding role around the world?

Some of the United States policymakers believed that they should switch from isolationism to a more expanding role around the world because, without the United States’ intervention, many fascist powers around the world were taking deeper roots and that was believed would turn out to be dangerous for the United States in the future.

Explanation:

to it’s stable government, it has been able to accept refugees from somalia and south sudan. (apex)

north east because it has more forest