In what year was the preamble to the IBEW Constitution first adopted?

The preamble to the IBEW (International Brotherhood of Electrical Workers) Constitution was first adopted in 1891. This year is significant as it marked the establishment of a guiding statement that encompasses the values and objectives of the organization. The preamble outlines the commitment of the IBEW to improving the conditions of workers, advocating for their rights, and promoting solidarity among electrical workers. The adoption in 1891 reflects a key moment in labor history, during which unions were becoming more organized and influential, setting the stage for future labor movements. The other years mentioned do not align with the historical records regarding the formation of the IBEW and its foundational documents. Therefore, the selection of 1891 accurately reflects the pivotal moment in the union's history.