There had been a long tradition of socialists organising on an international basis, and Karl Marx had led the International Workingmen's Association, which later became known as the "first international".
Telah ada tradisi lama sosialis dalam pengorganisasian di basis internasional, dan Karl Marx telah memimpin Asosiasi Pekerja Internasional, yang kemudian dikenal sebagai "internasional pertama".