The January 1949 Nairobi Accords and February 1949 Treaty of Izmir agreed to re-create The International Postal Union, International Labour Organisation and World Heath Organisation. At least those parts of the former LoN were reincarnated and joined by both the Allied, the Yugoslav Partisans*, Albanian Partisans*, Thailand* and neutral states.
*=As a norm Pro-Soviet and Axis forces do not join them, but the Yugoslav Partisans, Albanian Partisans, Thailand were the exception and did.
The October 1944 București Treaty founded the regional Balkans Axis between Romania, Pro-Bulgarian Macedonia, Bulgaria and Hungary.
New Zealand proposed the formation of the World Free Trade, Commerce and Movement Zone (WFTCMZ) in the 1947 Melbourn Conference in the May of that year, but only Australia was interested and nothing has been officially done by either nation to date.
The August 1947 Treaty of Berlin was a German-Italian-Croatian treaty of friendship, free trade and mutual defence.
The Communist Pact of Protection and Prosperity was founded in the may of 1948 as a mutual trade and defence pact between the USSR, Taun-Tuva, Mongolia and the Transcaucasian SSR.
Several princely states were given independence by the 1949 Treaty of Kabul.