Indiana Territory: Polity Style: 1800-1816

4 Jul 1800	part of the Territory of the United States Northwest of the River Ohio constitutes a separate territory to be called the Indiana Territory, in accordance with an act passed by the Congress of the United States (House of Representatives on 31 Mar 1800, Senate on 21 Apr 1800 with amendments, House disagrees with amendments on 28 Apr 1800, House recedes from disagreement on 5 May 1800), signed into law on 7 May 1800, effective on 4 Jul 1800, the date appointed by the act (Statutes at Large, 2:58-59) [1][2]
4 Jul 1800 - 29 Jun 1816	Indiana Territory
19 Apr 1816	the inhabitants of the Indiana Territory are authorized to form a constitution and state government and to assume a name for the future State, to be admitted to the United States when formed, in accordance with an act passed by the Congress of the United States (House of Representatives on 30 Mar 1816; Senate on 13 Apr 1816 with amendments, House concurred in on 15 Apr 1816) and signed into law on 19 Apr 1816 (Statutes at Large, 3:289-291) [3]
29 Jun 1816	the Constitution of the State of Indiana is adopted at a session of the Convention held at Corydon on 29 Jun 1816 (Indiana Constitutional Convention 1816, pp. 68-69) [4]

Full title: An Act to divide the Territory of the United States northwest of the Ohio, into two separate governments.
The government of the Indiana Territory was established in July 1800, as evidenced by the journal of executive proceedings, which begins with an entry dated 22 Jul 1800 relating to the appointment of territorial officials by the Secretary of the Territory, who arrived at Vincennes on that date or shortly before.
Full title: An Act to enable the people of the Indiana Territory to form a constitution and state government, and for the admission of such state into the Union on an equal footing with the original states.
Following the adoption of the Constitution of the State of Indiana, the governor, secretary, judges, and other officers of the territorial government were authorized by a provision of the Constitution to continue in office until superseded.