The Second International became ineffective in 1916 during World War I because the separate national parties that composed the International did not maintain a unified front against the war, instead generally supporting their respective nations' role.
Internasional Kedua dibubarkan pada 1916 selama Perang Dunia I, karena partai-partai dari berbagai negara yang membentuk Internasional tidak menjaga front persatuan melawan perang, malahan secara umum mendukung peran negaranya masing-masing.