Which did isolationist use to show America should have a neutral foreign policy

Thomas Jefferson

Explanation:

And in 1801, the nation's third president, Thomas Jefferson, in his inaugural address, summed up American isolationism as a doctrine of "peace, commerce, and honest friendship with all nations, entangling alliances with none…”May 4, 2020

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productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.