Answer: Supporters believed Alaska would provide valuable natural resources, while detractors felt it was too cold and too far away.
Explanation:
Alaska was purchased by the Andrew Johnson Presidency in 1867 from Russia whose leaders believed it best to sell the territory as they did not think themselves strong enough to defend against the British decided to add it to Canada.
Not all in the U.S. were in favor of purchasing the territory however. These detractors felt Alaska was a cold and barren wasteland that was too far away. Supporters on the other hand, noted that there was a chance Alaska had valuable natural resources - and they were right.
Since he made this choice because he thought it would be the best for Pennsylvania and did not want to increase the Native American population. He thought issues would soon unfold so chose to reject it which started the war later on.