Matching the items provided:
1. an unprovoked attack - aggression
2. members of the Fascist Party, led by Benito Mussolini - Fascists
3. members of the National Socialist German Workers' Party, led by Adolf Hitler - Nazis
Explanation:
- An unprovoked attack is synonymous with aggression, which refers to initiating hostilities without being provoked or attacked first.
- Members of the Fascist Party, under the leadership of Benito Mussolini, are known as Fascists. Fascism is a political ideology associated with authoritarianism and extreme nationalism.
- Members of the National Socialist German Workers' Party, led by Adolf Hitler, are referred to as Nazis. Nazism is a form of fascism that was practiced by the Nazi Party in Germany under Hitler's rule.