The United States flag is raised in…
October 1867 CE
The United States flag is raised in Alaska on October 18, 1867 (now called Alaska Day), a date changed from the Julian calendar to the Gregorian calendar.
Therefore, for residents, Friday, October 6, 1867 is followed by Friday, October 18, 1867—two Fridays in a row because of the date line shift.
After Russian America is sold to the U.S., all the holdings of the Russian–American Company are liquidated.
When Alaska is purchased, most of its land remains unexplored.
In 1865, Western Union had laid a telegraph line across Alaska to the Bering Strait where it will connect, under water, with an Asian line.
It had also conducted the first scientific studies of the region and produced the first map of the entire Yukon River.