On 19th of October 1867 the United States of America formerly took possession of Alaska from the Russian Empire.
Agreement had been reached back in March for a price of $7.2million.
The Treaty with Russia was negotiated and signed by Secretary of State William Seward and Russian Minister to the United States Edouard de Stoeckl. Critics of the deal to purchase Alaska called it “Seward’s Folly” or “Seward’s Icebox.” Opposition to the purchase of Alaska subsided with the Klondike Gold Strike in 1896. Alaska Purchase Treaty: Primary Documents in American History
In 1959 it became the State of Alaska.