What significant act was established in 1920 due to actions taken at the 15th Convention?

The correct answer is the establishment of the strike fund, which was a significant development emerging from the discussions and actions taken during the 15th Convention in 1920. At this convention, the labor movement recognized the need for a collective financial resource to support workers during strikes, setting a precedent for organized labor's ability to sustain its members in times of conflict with employers. The strike fund was designed to provide crucial assistance to workers who might otherwise suffer financially during industrial action, highlighting the importance placed on solidarity and mutual support within labor groups.

While the other options, like the Wagner Act or the Emergency Labor Act, are important pieces of labor legislation, they were established in different contexts and periods. The Industrial Relations Council, although relevant to labor relations, does not specifically refer to the actions taken in 1920 at the 15th Convention. Thus, the focus on the strike fund reflects a direct outcome of that specific convention, showcasing the labor movement's evolution and strategies for worker support.