Which U.S. state has the nickname "The Last Frontier"?

The nickname "The Last Frontier" is associated with Alaska because it embodies the idea of the state as an untamed wilderness and the last region for exploration and settlement in the United States. This nickname reflects Alaska's vast, natural landscapes and its historical significance as the last territory to be purchased and admitted into the Union, being acquired from Russia in 1867. Alaska's remoteness and unique geography further reinforce its image as a frontier state filled with natural resources, wildlife, and opportunities for adventure and exploration.

While Oregon, California, and Texas each have their own distinct identities and nicknames–Oregon being known for "The Beaver State," California as "The Golden State," and Texas as "The Lone Star State"–none of these capture the essence of wilderness and exploration that is implied by Alaska's designation as "The Last Frontier."