When did Spain become a part of the United Nations?

Question

What year did Spain join the U.N?

Answer 1

"After World War II, Spain was politically and economically isolated, and was kept out of the United Nations until 1955, when due to the Cold War it became strategically important for the U.S. to foment a military presence on the Iberian peninsula, next to the Mediterranean Sea and the Strait of Gibraltar, in order to protect southern Europe."

http://en.wikipedia.org/wiki/Spain