In the excerpt from the “four freedoms” speech, why does roosevelt see the present threat to american security and safety as unprecedented?
a. no nation has ever attacked or invaded the united states.
b. no nation has ever attempted to destroy the world's democracies.
c. no nation has ever succeeded in establishing a military dictatorship.
d. no nation has ever requested military assistance from the united states.

In the excerpt from the “Four Freedoms” speech, Roosevelt see the present threat to American security and safety as unprecedented because (B) No nation has ever attempted to destroy the world's democracies.

Explanation:

Franklin D. Roosevelt’s speech highlighted four freedoms in his speech: freedom of speech, freedom of worship, freedom from want and freedom from fear.

The speech he delivered emphasized on the policy of intervention in World war II. It had become significant for them to break their initial policy of not participating in the war. It was time to take strong action because there was a threat to America's security. None of the countries had earlier attacked world democracy but it was possible then that this would happen.

i would believe it would be b., the author wants to draw the reader deeper into the experience