Answer:
The Steel Pact between Germany and Italy came before the Tripartite Pact that joined Germany, Italy and Japan.
Explanation:
The Pact of Steel, officially the Pact of Friendship and Alliance between Germany and Italy, was an agreement between the governments of Italy and Germany, signed on May 22, 1939, by Galeazzo Ciano and Joachim von Ribbentrop. The pact was alliance in case of international threats; immediate aid and military support in the event of war; furthermore, neither party could enter into peace without the consent of the other; and collaboration in war production and military field. The Pact was originally valid for ten years.
On September 27, 1940, Germany, Italy and Japan signed the Tripartite Pact (or Pact of the Axis). The agreement established mutual defense between the three countries if any of them were attacked by an enemy nation that was not yet involved in World War II. In addition to formalizing the existing alliance between countries, the signing of the Pact was intended to intimidate the United States, which until then had remained neutral in the conflict.