| 19 Jun 1819 |
the consent of the Commonwealth of Massachusetts to the formation of the District of Maine as a separate and independent state is granted in accordance with an act passed by the General Court of Massachusetts (Senate on 15 Jun 1819; House of Representatives on 17 Jun 1819) and signed into law on 19 Jun 1819, subject to approval by a popular vote to be held in Maine and the consent of the Congress of the United States (Massachusetts Session Laws 1819, pp. 248-260) [1] |
| 24 Aug 1819 |
the formation and erection of the District of Maine into a separate and independent state is approved by a popular vote on 26 Jul 1819, the results of the vote are certified by a proclamation issued by the Governor of the Commonwealth of Massachusetts on 24 Aug 1819 (Maine Convention Journal 1819-1820, pp. 17-19; Portland Gazette, No. 2008, 31 Aug 1819, p. 2) |
| 15 Oct 1819 |
the name of the District of Maine is to be changed to the State of Maine, on condition that the district should have been admitted into the United States as one of the states before 4 Mar 1820, in accordance with an ordinance passed at a session of the Convention held at Portland on 15 Oct 1819 (Maine Convention Debates 1819-1820, pp. 76-77) |
| 6 Jan 1820 |
the Constitution of Maine is adopted at a session of the Convention held in Portland on 28 Oct 1819, signed on 29 Oct 1819, ratified by a popular vote on 6 Dec 1819; the results of the vote are certified by the Convention on 6 Jan 1820 (Maine Convention Journal 1819-1820, pp. 75-81, 98-99; Eastern Argus, No. 863, 21 Mar 1820, p. 2) |
| 15 Mar 1820 |
Maine is admitted to the United States under the name of the State of Maine in accordance with an act passed by the Congress of the United States (House of Representatives on 3 Jan 1820; Senate on 18 Feb 1820 with amendments; House rejected amendments on 23 Feb 1820 and 28 Feb 1820; Senate withdrew amendments on 3 Mar 1820), signed into law on 3 Mar 1820, effective on 15 Mar 1820, the date fixed in the act (Statutes at Large, 3:544) [2] |
| 15 Mar 1820 |
the Constitution of Maine comes into operation on 15 Mar 1820, the date appointed by the act of the General Court of Massachusetts of 19 Jun 1819 (Massachusetts Session Laws 1819, pp. 248-260; Maine Constitution and Laws 1820, pp. vii-xxxvi) |
| 15 Mar 1820 - |
State of Maine |
| 16 Mar 1820 |
the admission of Maine to the United States under the Constitution adopted and ratified by the people is announced by proclamation of the President of the Convention issued on 16 Mar 1820 (Portland Gazette, No. 2040, 21 Mar 1820, p. 2) |
