when did us buy alaska

The United States agreed to buy Alaska from Russia on March 30, 1867, when the Treaty of Cession was signed.

The formal transfer of Alaska to U.S. control took place later that year, on October 18, 1867, which is still celebrated in Alaska as Alaska Day.

The purchase price was 7.2 million dollars, which worked out to roughly two cents per acre for the vast territory.

Information gathered from public forums or data available on the internet and portrayed here.