during the 1920s, the most commonly used tool used to stop labor strikes and limit labor organizing activities was

During the 1920s, the most commonly used tool to stop labor strikes and limit labor organizing activities was firing labor union members.

Explanation:

The rise of labor unions began in the early 20th century as a means of protecting or fighting for workers' rights in industries. As industrialization grew, so did the number of workers that were needed in these factories. However, unhealthy factory conditions (smoke, poor lighting, dust) combined with low wages and extremely long work hours made workers angry. They started organizing themselves into labor unions to fight for their rights. Employers were not happy about this since all they cared about was their profit and wealth, so the most common method they used to stop these workes was firing them and replacing them with other immigrant workers. Later on, these workers were given a partial right to strike for better wages and work conditions, and so employers could not fire them.

To arbitrate labor disputes during WWII, the National War Labor Board was ... executives, and four public representatives, it was made to avoid strikes and lockouts during the war ... "Ghetto" is used figuratively to evoke an area, especially an urban ... an organization of more than 2 million members united by the belief in the ...