Identify the nominalization$($s$)$ in the following passage:

The United Nations $($U$.$N$.)$ is a global diplomatic and political organization dedicated to international peace and stability. The establishment of the U$.$N$.$ took place in $1945$ following the horrific events of World War II$,$ when international leaders proposed creating a new global organization to maintain peace and avoid the abuses of war. The U$.$N$.$ initially had just $51$ member states; today, there are $193$ members.

Select one or more:

The United Nations $($U$.$N$.)$ is

The establishment of the U$.$N$.$ took place

The U$.$N$.$ initially had

today, there are