Title: Admission to the Union
Content: of the established state as well as the Congress. It was anticipated that Kentucky (which was a part of Virginia), Franklin (which was a part of North Carolina, and later became part of the Southwest Territory), Vermont (to which New York asserted a disputed claim), and Maine (which was a part of Massachusetts), would become states. As a result of this compromise, new breakaway states are permitted to join the Union, but only with the proper consents. Shortly after the new Constitution went into effect Congress admitted Vermont and Kentucky on equal terms with the existing 13 states, and thereafter

Title: Admission to the Union
Content: were never part of an organized incorporated U.S. territory. Kentucky, Maine, and West Virginia were each set off from already existing states. Texas and Vermont both entered the Union after having been sovereign states (only "de facto" sovereignty in Vermont's case, as the region was claimed by New York). California was set off from unorganized land ceded to the United States by Mexico in 1848 at the end of the Mexican–American War. Admission to the Union The Admission to the Union Clause of the United States Constitution, often called the New States Clause, found at Article IV, Section 3, ,

Title: Political union
Content: in 1957, Vermont (1791), Texas (1846), and California (1848) all were annexed by the United States of America, and Crimea was annexed into the Russian Federation in 2014. The unification of Italy involved a mixture of unions. The kingdom consolidated around the Kingdom of Sardinia, with which several states voluntarily united to form the Kingdom of Italy. Others polities, such as the Kingdom of the Two Sicilies and the Papal States, were conquered and annexed. Formally, the union in each territory was sanctioned by a popular referendum where people were formally asked if they agreed to have as their new

Title: U.S. state
Content: authority to admit new states into the Union. Since the establishment of the United States in 1776, the number of states has expanded from the original 13 to 50. Each new state has been admitted on an equal footing with the existing states. It also forbids the creation of new states from parts of existing states without the consent of both the affected states and Congress. This caveat was designed to give Eastern states that still had Western land claims (including Georgia, North Carolina, and Virginia), to have a veto over whether their western counties could become states, and has

Title: National Education Association
Content: (the Florida Education Association formed in 2000); Minnesota (Education Minnesota formed in 1998), Montana (MEA-MFT formed in 2000), New York (New York State United Teachers formed in 2006) and North Dakota. North Dakota United formed in 2013. Before the 1960s, only a small portion of public school teachers were unionized. That began to change in 1959, when Wisconsin became the first state to pass a collective bargaining law for public employees. Over the next 20 years, most other states adopted similar laws. The NEA reported a membership of 766,000 in 1961. In the 1960s, the NEA's demographics were changing. This

Question: What was the first state to join the Union in the 20th century?
Answer: Oklahoma