 
<translate> Don amsa wannan tambayar, ya kamata mu sani cewa: Yarjejeniyar Paris (1951) da ke kafa Ƙungiyar Hannu da Karfe ta Turai ta kafa haƙƙin 'yanci na' yanci ga ma'aikata a cikin waɗannan masana'antu da kuma Yarjejeniyar Roma (1957) ta ba da damar' yanci na ma'aikata a cikin Ƙungiyar Tattalin Arzikin Turai. Saboda haka amsar ita ce 1957. <eng> To answer this question, we should know that: The Treaty of Paris (1951) establishing the European Coal and Steel Community established a right to free movement for workers in these industries and the Treaty of Rome (1957) provided a right for the free movement of workers within the European Economic Community. So the final answer is 1957. 