Which part of the un most likely responded after a tsunami struck japan in 2011? economic and social council general assembly secretariat international court of justice.

Economic and Social Council

 the arm of the UN operates fifteen specialized agencies among them disaster management. established by the UN charter the arm main role is to promote higher standards of living, full employment, and economic and social progress; identifying solutions to international economic, social and health problem among several others.

They showed the country that integration could be successful.