Identify and explain a cause and effect relationship associated with the historical development in documents 1 and 2.be sure to use evidence from both documents in your response (i need help)

Prior to the 1948 presidential campaign, truman won back the support of labor unions by highlighting his opposition to the taft-hartley act. supporting the passage of the national security act. pushing for equal rights for african american citizens. opposing the strikes of railroad and mine workers.