This may be a dumb question. is the constitution against slavery?

Yes & No.

The Constitution was against the idea of slavery UNLESS the person (becoming a slave) was convicted and that their punishment was to do slave (manual) labor.

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from the conditions of the working class in england by friedrich engels,the main idea is :

roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.