And was it the 50th state? If not which state was the latest to become a US sate?

Hawaii joined in January of 1951 i think or is it december one of the two but hawaii is the 50th

It is the 49th, Alaska is the 50th

The island of Hawaii became a state in August, 21 1959. Alaska was a year earlier.

No Alaska is 49th, Hawai'i is 50th.

Here:

Alaska-January 3, 1959
Hawai'i-August 18, 1959