Deaths on December 12

John Ponsonby, Irish lawyer and politician (b. 1713)

Hon. John Ponsonby, PC (Ire) (29 March 1713 – 16 August 1787) was an Anglo-Irish politician.

30 Jan

Qing dynasty
Tây Sơn forces emerge victorious against Qing armies and liberate the capital Thăng Long.
4 Mar

United States Bill of Rights
In New York City, the first Congress of the United States meets, putting the United States Constitution into effect. The United States Bill of Rights is written and proposed to Congress.
8 Jun

United States Bill of Rights
James Madison introduces twelve proposed amendments to the United States Constitution in Congress.
2 Oct

United States Bill of Rights
George Washington sends proposed Constitutional amendments (The United States Bill of Rights) to the States for ratification.
3 Oct

Thanksgiving (United States)
George Washington makes the first Thanksgiving Day designated by the national government of the US