Answer:
Answer: He opens his speech with a sentence referring to “a date which will live in infamy" to grab his audience's attention. Explanation: The anecdote about the Japanese ambassador is important for the idea of the Day of Infamy as it points out the nature of the happenings in the Pearl Harbour.
The anecdote related to the Japanese ambassador contribution should be that He unlocked his speech with a sentence that represents "a date which will live in infamy" so that the attention of the audience's could be taken.
The anecdote related to the Japanese ambassador should be significant for the infamy day since it is seemed that the nature of the situations that happened in the pearl harbour. According to president Roosevelt, he said that the ambassador of Japanese should communicate to the USA when the attack was done. Here the vital idea related to the speech should be believed.
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