Which historic event is commemorated by the Alaska Day celebration?

The Alaska Day celebration commemorates the transfer of Alaska from Russia to the United States, which occurred on October 18, 1867. This event is significant as it marked the formal transition of Alaska into U.S. governance, which began the process of integrating the territory into American society and economy. The event is celebrated to recognize the importance of this historical acquisition, which not only expanded the geographical boundaries of the United States but also opened up new opportunities for exploration, settlement, and resource development in the region.

The transfer itself was carried out in a formal ceremony often referred to as "The Transfer Ceremony," where U.S. officials raised the American flag in Alaska for the first time. This marked a pivotal moment in the history of both Alaska and the United States. The celebration emphasizes the rich history that Alaska has as part of the United States since that transfer.

Other options relate to significant historical moments but do not represent the specific event that Alaska Day honors. The founding of the Alaska Territory and the discovery of gold in Alaska are important in their own rights, but they are not directly tied to the celebration of Alaska Day. Similarly, the purchase of Alaska refers to the agreement made by the U.S. to acquire the territory, but the actual transfer event