Which organization was formed in 1945 to promote international peace and security?

         The United Nations ( UN ) is founded in 1945, when represe4ntatives of 50 countries met in San Francisco.  The UN officially came into existence on October 24, 1945. After that October 24 became the United Nations Day. This organization was established after World War 2 in order to prevent another such conflict and to promote international peace and security.
the United Nations.

The United Nations

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.