What was the central idea in president Roosevelt’s speech?

What is the main idea of Roosevelt's speech?

Essentially, Roosevelt's speech and timing extended his executive powers to not only declaring war but also making war, a power that constitutionally belongs to Congress.

Explanation:

texas governor sam houston opposed secession, but was unable to prevent it. in this speech, given prior to lincoln's election, he presents the argument that slavery would be safer within the united states than outside of it. it was a prescient argument, and one held by several other southern leaders.

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answer; collective security;