Oklahoma (1907), New Mexico (1912), Arizona (1912), Alaska (1959), and Hawaii (1959) were admitted to the union during the 20th century.
States admitted in the 20th century: Oklahoma, New Mexico, Arizona, Alaska, and Hawaii.
Arizona was admitted into the union during the 20th century. Arizona was admitted into the Union on February 14, 1912 becoming the 48th state to join the Union. California was admitted into the Union on September 9, 1850 becoming the 31st state to join the Union. Vermont was admitted into the Union on March 4, 1791 becoming the 14th state to join the union.
Louisiana was admitted into the Union on April 30, 1812 becoming the 18th state to join the Union.Mississippi was admitted into the Union on December 10, 1817 becoming the 20th state to join the Union.
Mississippi was admitted into the Union on December 10, 1817 becoming the 20th state to join the Union.
Mississippi was admitted to the Union on December 10, 1817 becoming the 20th state to join the Union.
Mississippi became the 20th state admitted to the Union on December 10, 1817.
Mississippi became the 20th state admitted to the Union on December 10, 1817.
In 1816, Indiana was the US state that was admitted to the Union as the 20th state. The state was around as early as 8000 BC.
Oklahoma (1907), New Mexico (1912), Arizona (1912), Alaska (1959), and Hawaii (1959) were admitted into the union during the 20th century.
Mississippi was the 20th state to join the union, being admitted on December 10, 1817.
Mississippi joined the Union on December 10, 1817 - as the 20th State
Mississippi was admitted into the Union on December 10, 1817 becoming the 20th state to join the Union.