United States Statehood

https://www.census.gov/dataviz/visualizations/048/ Feb 21, 2013 "Historically, acquisition of new territory and conversion of that territory into organized states happened very quickly. Between 1790 and 1920, each decade saw changes in the territorial extent or the make-up of states in the country. This period of change was followed by several decades during which there were no changes until Alaska and Hawaii were admitted as states." Census Bureau

https://www.archives.gov/legislative/features/louisiana-statehood Jul 24, 2019 "Among the historical records of the U.S. House of Representatives and the U.S. Senate at the Center for Legislative Archives are many documents that illustrate the important role Congress plays in the creation of states. For Louisiana the road to statehood was relatively short; it became a state less than 10 years after being acquired from the French Government under provisions of the Louisiana Purchase. Louisiana became a state in 1812—here is a selection of congressional records that document Louisiana's journey to become the 18th state in the Union." National Archives

https://www.archives.gov/legislative/features/oklahoma May 30, 2019 "Housed in the historical records of the U.S. House of Representatives and the United States Senate at the Center for Legislative Archives are many documents that illuminate Congress's role in the statehood process. Below is a selection of the wide-variety of congressional records that document Oklahoma's unique path to statehood." National Archives

https://www.archives.gov/legislative/features/nm-az-statehood Aug 17, 2016 "Among the historical records of the U.S. House of Representatives and the U.S. Senate at the Center for Legislative Archives are many documents that illustrate the important role Congress plays in the creation of states. For both New Mexico and Arizona, the road to statehood was protracted and contentious. However, after much effort, on January 6, 1912 New Mexico became the 47th state and on February 14, 1912 Arizona became the 48th state in the Union. Both states celebrate their 100th anniversaries in 2012. Here is a sample of the many congressional records that document New Mexico's and Arizona's long journeys to statehood." National Archives