Which european nation claimed alaska

I would say the answer is Russia because, At the instigation of U.S. Secretary of State William Seward, the United States Senate approved the purchase of Alaska from Russia for $7,200,000 on August 1, 1867.

I hope this Helps.

i just did something on this guy a few days a go give me two minutes to find it in my notes.

the answer is a) high entry costs