IMF and World Bank were created through:

The International Monetary Fund and the World Bank, which was originally called the International Bank for Reconstruction and Development, came into existence as a result of the Bretton Woods Conference held in July 1944 in New Hampshire. At the conference, delegates of 44 Allied countries met to discuss a new international monetary system, which would stabilize the world economy, increase international trade, and support the reconstruction of the world economy after World War II.