Question

2. Which sentence contains a supporting detail that answers the question when? In 1867, the United States bought Alaska from Russia for about $7 million. Many Americans thought it was a foolish purchase. They thought Alaska was a wasteland of ice and snow. However, Alaska is rich in oil, fish, and lumber. The purchase of Alaska was a true bargain. In 1867, the United States bought Alaska from Russia for about $7 million. Many Americans thought it was a foolish purchase. However, Alaska is rich in oil, fish, and lumber. The purchase of Alaska was a true bargain.

Answer 1

I'd say the sentence "In 1867, the United States bought Alaska from Russia for $7 million"

Answer 2

In 1867, the United States bought Alaska from Russia for about $7 million.

Step-by-step explanation:

The correct sentence is the only one that answers the question when by providing the exact year and particular feature about the purchase - that it cost seven million dollars.

The rest of the statements are wrong because they describe what Americans thought about the acquisition of Alaska and what Alaska's riches actually are.