Arkansas: Polity Style: 1819-1836

4 Jul 1819	the southwestern part of the Missouri Territory constitutes a separate territory under the name of Arkansaw, in accordance with an act passed by the Congress of the United States (House of Representatives on 20 Feb 1819, Senate on 1 Mar 1819), signed into law on 2 Mar 1819, effective on 4 Jul 1819 (Statutes at Large, 3:493-496) [1]
4 Jul 1819 - 15 Jun 1836	Territory of Arkansas [2]
30 Jan 1836	the Constitution of the State of Arkansas is adopted at a session of the Convention held in Little Rock on 30 Jan 1836, pending approval by the Congress of the United States and admission of Arkansas into the Union (Arkansas Convention 1836, p. 51)
15 Jun 1836	Arkansas is admitted to the United States under the name of the State of Arkansas in accordance with an act passed by the Congress of the United States (Senate on 4 Apr 1836, House of Representatives on 13 Jun 1836), signed into law on 15 Jun 1836 (Statutes at Large, 5:50-52) [3]
15 Jun 1836	the Constitution of the State of Arkansas comes into operation on 15 Jun 1836, the date of admission of Arkansas into the Union as required by an act passed by the General Assembly of the Territory of Arkansas and signed into law on 3 Nov 1835 (Arkansas Territory Laws 1835, pp. 96-99) [4][5]

Full title: An act establishing a separate territorial government, in the southern part of the territory of Missouri.
The spelling used in the Act of Congress of 2 Mar 1819 was "Arkansaw territory." The same definition was used in the commissions of territorial governors issued by the President of the United States in 1819, 1825, 1828 and 1829.
Full title: An Act for the admission of the State of Arkansas into the Union, and to provide for the due execution of the laws of the United States, within the same, and for other purposes.
Full title: An Act for the Election of Members to the Convention to frame a Constitution and System of Government for the people of Arkansas, preparatory to their admission into the Union as a State.
Following the coming into operation of the Constitution of the State of Arkansas, all civil and military officers of the territorial government were authorized by a provision of the Constitution to continue in office until superseded.