Which of the following territories was purchased by the united states in 1867 for $7.2 million (2 cents per acre)?

Alaska

Explanation:

   On March 30, 1867, US Secretary of State William H. Seward agreed to buy Alaska from Russia for about $ 7.2 million. We may even consider that the price the Americans paid was a “bargain” when considering the approximate area of 1 600 000 km² of land acquired.

    The main reason why the rulers wanted this land so badly was that its annexation would increase the size of the US by almost 20%. After many conversations and discussions that supposedly took a whole night, the United States and Russia finally signed the deal at dawn on March 30.

answer: hey improve the marine life in a certain area.

they provide a new location for fishermen to fish and which works to ease the pressure on natural reefs.

they are a great way to get rid of large objects that would otherwise be placed on landfills

explanation:

elastic potential energy