How many nations were originally involved in the creation of the united nations?

In reality there were actually 5 states of United States of America, France, China, United Kingdom and the Soviet Union were involved in the creation of the United Nations. During the time of the foundation of the United Nations, there were a total of 51 nations involved. Now the total number of nations that are there in the United Nations has increased to 193. 

In my honest opinion , i’d say franklin d roosevelt was a president that impacted our nation , i say this because fdr is voted among top three best us presidents and he was the longest serving president by 3 terms , usually presidents only supposed to have two terms increments of 4 years , equivalent to 8 years total before election time. and he established the fdic , through the 1933 banking act and he established the us , social security system , during his presidency, and established a national minimum wage , through the fair labor standards act , fdr led the allied coalition to victory in wwii and he played a major role in the creation of the united nations.