Louisiana was admitted to the Union on April 30, 1812 as the 18th State.
There were 15 stars on the flag throughout the War of 1812. There were 18 states by the end of 1812, but the flag did not officially add stars until the 20th state was added in 1818.
"April 30, 1812 (18th)"-Wikipedia
Louisiana was admitted as the 18th US state in 1812.
Jefferson City
Alaska was the 49th state added to the US.
It became the 18th US State on April 30th, 1812.
James Madison was the president when this happened in 1812.
James Madison was president when Louisiana became a state on April 30, 1812.
On the US flag it is when a new state is added.
Louisiana on Thursday, April 30, 1812
Hawaii became the 50th US State.