Final answer:
The author argues for Puerto Rico's statehood by comparing it to Hawaii and Alaska, which became states despite their distance from the U.S. mainland and their initial statuses as territories.
Step-by-step explanation:
The author of "Puerto Rico" provides evidence in paragraph two for why Puerto Rico deserves to become the 51st state by showing how it contrasts with other U.S. territories that were given statehood. The evidence presented indicates that Puerto Rico's situation is similar to that of Hawaii and Alaska, territories that also were once far removed from the continental United States but ultimately were granted statehood. The passage suggests that, like these states, Puerto Rico has a longstanding relationship with the U.S., with its people having been granted American citizenship and having developed a civil government under the American flag. This highlights the argument for Puerto Rico's statehood based on historical precedents established by other non-contiguous territories.