Question

based off of westward migration and settlement, which states most likely joined the nation last?

I'm not sure what it could be

Answer 1

No. Alaska and Hawai'i were the last states to join the union in 1959. Arizona and New Mexico were the last ones before that, in 1912. Generally, though, the inland and western states did join the union as they became populated and organized governments, yes. I'm not sure what your question is asking you to figure out.

(California was admitted as a state in 1850.)