On 2 April 1925 and modified on 23 May 2006.
It was designed by Louise Fluke in a contest sponsored by the Daughters of the American Revolution and was adopted by the State Legislature on 2 April 1925.
The current flag was adopted by the State Legislature in 1885.
The Tennessee State Legislature officially adopted the flag on April 17, 1905.
The design of the present Oklahoma state flag was adopted in 1925. It highlights the cultural diversity of the state by prominently featuring Native American symbols in the design.
The Territorial Legislature adopted "Alaska's Flag" in 1955. It became the official state song in 1959, when Alaska entered the union as the 49th state of the U.S.
The Kansas state flag was adopted in 1927.
The state flag of Pennsylvania was adopted in 1778.
the minnesota flag was adopted in 1957
Tennessee adopted the state flag on April 17, 1905
it was adopted
The Colorado state flag was adopted on June 5, 1911
It was adopted because every union that became a state had to have a flag to represtent that union/state!