How many members did the trade union of 1914 have?

In 1914, the trade union movement in many countries, particularly in the United Kingdom and the United States, was experiencing significant growth. The British trade union membership was around 2 million, while in the U.S., it was approximately 2.5 million members. These numbers reflected a growing awareness and organization among workers seeking better rights and conditions. The onset of World War I later that year also influenced union activities and membership dynamics.